不同杉木无性系磷素特性的比较

doi:10.17521/cjpe.2006.0129

摘要/Abstract

摘要：

通过土培试验,进行磷素胁迫条件下不同杉木(Cunninghamia lanceolata)无性系磷素特性的比较研究。结果表明:在磷胁迫条件下不同杉木无性系的干物质积累、磷素吸收效率和磷素利用效率均存在显著差异。随着磷胁迫的加剧,不同杉木无性系的干物质积累量和磷素吸收效率下降,而磷素利用效率增强。总体而言,8、9、24、37号无性系的干物质积累量受胁迫影响最小,23号无性系受胁迫影响最大。其中8号无性系的磷素吸收和利用效率均较高,24、37号无性系的磷素吸收效率较高,而9号无性系的磷素利用效率较高,23号无性系的磷素吸收和利用效率均较低。在磷胁迫条件下,杉木无性系可通过提高磷素吸收效率和利用效率途径来提高杉木对环境磷素的利用。

关键词: 杉木, 无性系, 磷素特性, 磷胁迫, 磷效率

Abstract:

Background and Aims Phosphorus(P)deficiency is one of the main factors that influence plant productivity in agricultural and forestry systems. Fertilization and soil improvement are the primary practices used to meet the P demands of crops in traditional agriculture and of trees in forestry management. Chinese fir (Cunninghamia lanceolata), a fast-growing, evergreen coniferous tree with high yield and quality of wood, is the most important tree species of timber plantations in subtropical China. Since Chinese fir plantations range from about 20° to 30° N in latitude and 100° to 120° E in longitude, there are many different genotypes of Chinese fir among the forests in south China. Therefore, it is possible to select the Chinese fir clone with high phosphorus use efficiency.

Methods Based on the pot experiment under the different phosphorus deficiency stress (heavy, medium, slight phosphorus deficiency and normal phosphorus supply), the dry matter accumulation, phosphorus absorption efficiency, and phosphorus use efficiency of eight different Chinese fir clones were analyzed to compare their phosphorus characteristics.

Key Results There were significant differences in the dry matter accumulation, phosphorus absorption efficiency and phosphorus use efficiency among different clones under phosphorus stress. The dry matter accumulation and phosphorus absorption efficiency of different clones decreased whereas phosphorus use efficiency increased with increasing phosphorus stress. The dry matter accumulation of Clone 8, 9, 24 and 37 were influenced by phosphorus stress less than those of the other clones. Phosphorus stress significantly afftected the dry matter accumulation of Clone 23. Higher phosphorus absorption and use efficiency in Clone 8, higher phosphorus absorption efficiency in Clone 24 and 37, and higher phosphorus use efficiency Clone 9 were found under phosphorus stress. However, the phosphorus absorption efficiency and phosphorus use efficiency of Clone 23 were lower than those of the other 7 clones.

Conclusion High phosphorus absorption and use efficiency of Chinese fir are the major adaptive strategy under environment with low phosphorus availability.

Key words: Chinese fir, Clones, Phosphorus stress, Phosphorus use efficiency

梁霞, 刘爱琴, 马祥庆, 冯丽贞, 黄益江. 不同杉木无性系磷素特性的比较. 植物生态学报, 2006, 30(6): 1005-1011. DOI: 10.17521/cjpe.2006.0129

LIANG Xia, LIU Ai-Qin, MA Xiang-Qing, FENG Li-Zhen, HUANG Yi-Jiang. COMPARISON OF THE PHOSPHORUS CHARACTERISTICS OF DIFFERENT CHINESE FIR CLONES. Chinese Journal of Plant Ecology, 2006, 30(6): 1005-1011. DOI: 10.17521/cjpe.2006.0129

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链接本文: https://www.plant-ecology.com/CN/10.17521/cjpe.2006.0129

https://www.plant-ecology.com/CN/Y2006/V30/I6/1005

图/表 3

参考文献 25

[1]	Cao J(曹靖), Zhang FS(张福锁) (2000). Phosphorus uptake and utilization efficiency in seedlings of different wheat genotypes as influenced by water supply at low soil phosphorus availability. Acta Phytoecologica Sinica(植物生态学报), 24,731-735. (in Chinese with English abstract)
[2]	Chen JL(陈金林), Shi JS(施季森), Wang GP(王光萍), Yu NJ(余能健), You WG(游为贵), Lin ZP(林志鹏), Huang DM(黄道明), Li WJ(李文杰) (1996a). A study of fertilization and afforestation density on fine family young plantation of Cunninghamia lanceolata. Journal of Nanjing Forestry University(南京林业大学学报), 20(2),20-23. (in Chinese with English abstract)
[3]	Chen JL(陈金林), Yu YC(俞元春), Wang GP(王光萍), You WG(游为贵), Lin ZP(林志鹏), Huang DM(黄道明) (1996b). Analysis on growth response to fertilization in young Cunninghamia lanceolata plantation. Forest Research(林业科学研究), 9,426-430. (in Chinese with English abstract)
[4]	Fohse D, Claassen N, Jungk A (1991). Phosphorus efficiency of plant. II. Significant of root radius, root hairs and cation-anion balance for phosphorus influx in seven plant species. Plant and Soil, 132,261-272. DOI URL
[5]	Gerloff GC (1987). Intact-plant screening for tolerance of nutrient-deficiency stress. Plant and Soil, 99,33-37.
[6]	Gardiner DT, Christense NW (1990). Characterization of phosphorus efficiencies of two winter wheat cultivators. Soil Science Society of America Journal, 54,1337-1340. DOI URL
[7]	Guo YC(郭玉春), Lin WX(林文雄), Shi QM(石秋梅), Liang YY(梁义元), He HQ(何华勤), Chen FY(陈芳育) (2003). Physiological adaptability of seeding rice genotypes with different P uptake efficiency under low P-deficient stress. Chinese Journal of Applied Ecology (应用生态学报), 14,61-65. (in Chinese with English abstract)
[8]	He WS(何文寿) (2003). Genotypic differences in phosphorus utilization efficiency among spring wheat varieties in Ningxia. Agricultural Research in the Arid Areas(干旱地区农业研究), 21(2),1-6. (in Chinese with English abstract)
[9]	Li CJ(李春俭), Pang X(庞欣), Zhang FS(张福锁) (2003). Comparison on responses of different phosphorus-efficient wheat varieties to phosphorus-deficiency stress. Acta Botanica Sinica(植物学报), 45,936-943. (in Chinese with English abstract)
[10]	Li JY(李继云), Li ZS(李振声) (1995). New breeding technology of crop with high acquisition to soil nutrition. Science in China Series B(中国科学B辑), 25,41-48. (in Chinese with English abstract)
[11]	Liang X(梁霞), Liu AQ(刘爱琴), Ma XQ(马祥庆), Feng LZ(冯丽贞), Chen YL(陈友力) (2005). The effect of phosphorus deficiency stress on activities of acid phosphatase in different clones of Chinese fir. Acta Phytoecologica Sinica(植物生态学报), 29,54-59. (in Chinese with English abstract)
[12]	Ma XQ(马祥庆), Liang X(梁霞) (2004). Research advances on mechanism of high phosphorus use efficiency of plants. Chinese Journal of Applied Ecology (应用生态学报), 15,712-716. (in Chinese with English abstract)
[13]	Morris RA, Garrity DP (1993). Resource capture and utilization in intercropping:non-nitrogen nutrients. Field Crops Research, 34,319-334. DOI URL
[14]	Raghothama KG (1999). Phosphate acquisition. Annual Review of Plant Physiology and Plant Molecular Biology, 50,665-693. DOI URL PMID
[15]	Tong XJ(童学军), Lu YG(卢永根), Yan XL(严小龙) (2000). Studies on the characteristics of phosphorus efficiency of native soybean (Glycine max (L.) Merrill) germplasm: differences in characteristics of phosphorus efficiency of shoot and root among soybean genotype sand correlation analysis. Chinese Journal of Oil Crop Sciences(中国油料作物学报), 22(4),48-53. (in Chinese with English abstract)
[16]	Vance CP, Claudia US, Allan DL 2003). Phosphorus acquisition and use: critical adaptations by plants for securing a nonrenewalbe resource. New Phytologist, 157,423-447.
[17]	Wang D, Bormann FH, Lugo AE, Bowden RD (1991). Comparison of nutrient use efficiency and biomass production in five tropical tree taxa. Forest Ecology and Management, 46,1-21. DOI URL
[18]	Wang QR(王庆仁), Li JY(李继云), Li ZS(李振声) (1998). Dynamics and prospect on studies of high acquisition of soil unavailable phosphorus by plants. Plant Nutrition and Fertilizer Sciences(植物营养与肥料学报), 4,107-116. (in Chinese with English abstract) DOI URL
[19]	Wang Y(王艳), Sun J(孙杰), Wang RP(王荣萍), Mi GH(米国华), Zhang FS(张福锁) (2003). Differences in uptake and utilization efficiency for phosphorus and correlation in maize inbred lines. Chinese Journal of Applied and Environmental Biology(应用与环境生物学报), 9,479-481. (in Chinese with English abstract)
[20]	Xie YR(谢钰容), Zhou ZC(周志春) (2002). Research advance on adaptation mechanism of forest tree to low-phosphorus stress and genetics of phosphorus efficiency. Forest Research(林业科学研究), 15,734-740. (in Chinese with English abstract)
[21]	Yan XL(严小龙), Zhang FS(张福锁) (1997). Genetics of Plant Nutrition (植物营养与遗传学). China Agriculture Press, Beijing,1-30. (in Chinese)
[22]	Yu YC(俞元春), Chen JL(陈金林), Zeng SC(曾曙才), You WG(游为贵), Lin ZP(林志鹏), Huang DM(黄道明), Li WJ(李文杰) (1997). Studies on the P utilization percent of young Chinese fir plantation. Journal of Nanjing Forestry University(南京林业大学学报), 21(1),33-36. (in Chinese with English abstract)
[23]	Yu XT(俞新妥) (2003). The Anthology of Yu Xin Tuo (俞新妥文选). China Forestry Publishing House, Beijing,7-10. (in Chinese)
[24]	Zhang HC(张焕朝), Wang GP(王改萍), Xu XZ(徐锡增), Xu CK(徐成凯), Hu ZY(胡正义) (2003). Phosphate uptake characteristics of kinetics and phosphorus efficiency in clones of poplar. Scientia Silvae Sinicae(林业科学), 36(6),40-46. (in Chinese with English abstract)
[25]	Zhou ZC(周志春), Xie YR(谢钰容), Jin GQ(金国庆), Chen Y(陈跃), Song ZY(宋振英) (2005). Study on phosphorus efficiency of different provenances of Pinus massoniana. Scientia Silvae Sinicae (林业科学), 41(4),25-30. (in Chinese with English abstract) DOI URL

磷水平 P levels	无性系 Clones	干物质积累量 Dry matter accumulation (g)
磷水平 P levels	无性系 Clones	1年生叶 One-year leaf	2年生叶 Two-year leaf	茎 Stem	根 Root	全株 Total	根冠比 R/S
H	3	0.38±0.11^Aa	1.22±0.43^Bb	1.89±1.06^Abc	2.82±0.34^Abc	6.31±3.94^Ac	0.88±0.35^Aa
	5	0.75±0.54^Aa	1.40±0.71^Ab	1.90±0.15^Abc	2.03±0.0B^Ac	6.08±0.36^Bc	0.50±0.03^Ba
	8	0.31±0.02^Ca	4.50±0.05^Aa	3.45±0.26^Bab	6.51±0.19^Cab	14.77±0.01^Bab	0.79±0.04^ABa
	9	0.20±0.12^Aa	2.21±0.12^Cb	2.69±0.32^Babc	5.55±0.01^Cabc	10.64±0.34^Cbc	1.09±0.07^Aa
	23	0.27±0.23^Aa	1.57±0.01^Bb	1.04±0.45^Ac	2.46±1.24^Bbc	5.34±1.92^Bc	0.85±0.16^Ba
	24	0.15±0.01^Ba	2.12±0.01^Bb	2.69±0.04^Aabc	6.00±0.82^Aab	10.96±1.50^Bbc	1.21±0.01^Aa
	34	0.78±0.11^Aa	2.82±0.43^Cb	2.37±0.44^Bbc	4.28±0.34^Bbc	10.25±0.94^Bc	0.69±0.35^Aa
	37	0.89±0.22^Aa	4.69±0.31^Aa	3.48±0.52^Aa	8.02±0.22^Aa	17.07±0.83^Aa	0.90±0.13^Aa
M	3	0.26±0.06^Ac	1.82±0.37^Bef	1.04±0.18^Ad	4.06±0.44^Ae	7.18±0.34^Ac	1.20±0.55^Aa
	5	0.23±0.01^Ac	2.00±0.01^Ae	2.19±0.01^Ac	2.08±0.01^ABAf	6.50±0.01^ABc	0.47±0.01^Bb
	8	0.24±0.00^Cc	4.34±0.00^Ab	3.47±0.06^Bb	7.31±0.45^BCbc	15.36±1.43^Bb	0.91±0.01^Aab
	9	0.41±0.22^Ac	3.64±0.06^Bbc	3.51±0.23^ABab	6.21±0.33^BCcd	13.77±0.018^Bb	0.83±0.10^Bab
	23	0.30±0.01^Ac	1.16±0.12^Af	1.18±0.01^Ad	2.65±0.01^ABf	5.29±0.27^Ac	1.00±0.09^Aab
	24	0.63±0.03^Ab	2.58±0.19^Bcd	2.39±0.26^Ab	6.02±0.95^Ab	11.61±1.74^Bb	1.08±0.04^Aab
	34	2.01±0.01^Ba	2.36±0.01^Cde	3.29±0.18^ABb	5.75±1.44^Bd	13.41±0.15^Bb	0.75±0.01^Aab
	37	0.70±0.27^Ab	5.84±0.86^Aa	3.87±0.38^Aa	8.85±1.43^Aa	19.26±0.45^Aa	0.87±0.22^Aab
L	3	0.87±0.28^Ab	4.17±0.98^ABb	2.85±0.47^Acd	4.14±0.46^Ag	12.03±3.99^Ab	1.12±0.17^Aa
	5	0.14±0.01^Ad	2.31±0.01^Ad	1.47±0.26^Af	4.89±0.06^ABfg	8.81±0.30^ABc	1.25±0.06^Aa
	8	1.45±0.04^Acd	5.76±1.68^Aa	5.26±0.56^Aa	0.23±0.33^ABbc	20.69±1.40^Aa	0.66±0.03^Cb
	9	0.38±0.10^Acd	4.86±0.57^Aab	3.42±0.28^ABc	6.62±0.31^Bde	15.26±0.70^ABb	0.77±0.01^Bb
	23	0.35±0.02^Acd	1.84±0.27^Acd	1.80±0.09^Aef	3.20±0.08^Ag	7.19±0.28^Ad	0.83±0.08^Bb
	24	0.69±0.03^Abc	4.62±0.08^Aab	2.43±0.38^Ade	7.35±0.19^Acd	15.09±0.30^ABb	0.95±0.09^Aab
	34	0.56±0.22^Abc	4.97±0.30^Bab	3.20±0.02^ABc	5.85±0.95^Bef	14.58±0.93^Bb	0.67±0.11^Ab
	37	1.69±0.62^Aa	3.75±0.54^Abc	4.21±0.12^Ab	9.83±2.16^Aa	19.48±3.21^Aa	1.00±0.11^Aab
CK	3	0.39±0.07^Aa	6.86±1.47^Aa	3.15±0.67^Aa	10.60±0.39^Aa	20.99±0.56^Aa	0.97±0.16^Aab
	5	0.85±0.29^Aa	3.30±0.90^Ab	3.77±0.32^Aa	5.01±0.16^Aa	12.92±2.66^Aa	0.63±0.20^Bb
	8	0.53±0.01^Ba	7.03±0.56^Aa	4.79±0.56^ABa	8.59±0.67^Aa	20.94±1.03^Aa	0.70±0.04^BCab
	9	0.57±0.36^Aa	4.08±0.04^ABab	3.68±0.12^Aa	7.56±0.39^Aa	15.89±0.61^Aa	0.91±0.04^ABab
	23	0.37±0.10^Aa	3.30±0.80^Aab	2.65±0.93^Aa	8.51±0.66^Aa	14.83±0.35^Aa	1.35±0.11^ABab
	24	0.45±0.19^ABa	3.64±0.21^Ab	3.60±0.25^Aa	7.54±0.022^Aa	15.24±0.45^Aa	0.98±0.06^Aab
	34	0.69±0.15^Aa	7.08±0.18^Aa	5.22±0.53^Aa	11.96±0.15^Aa	24.96±1.01^Aa	0.92±0.05^Aab
	37	1.44±0.67^Aa	4.72±1.24^Aab	3.53±1.38^Aa	11.18±0.61^Aa	20.87±1.06^Aa	1.03±0.23^Aa

磷水平 P levels	无性系 Clones	干物质积累量 Dry matter accumulation (g)
磷水平 P levels	无性系 Clones	1年生叶 One-year leaf	2年生叶 Two-year leaf	茎 Stem	根 Root	全株 Total	根冠比 R/S
H	3	0.38±0.11^Aa	1.22±0.43^Bb	1.89±1.06^Abc	2.82±0.34^Abc	6.31±3.94^Ac	0.88±0.35^Aa
	5	0.75±0.54^Aa	1.40±0.71^Ab	1.90±0.15^Abc	2.03±0.0B^Ac	6.08±0.36^Bc	0.50±0.03^Ba
	8	0.31±0.02^Ca	4.50±0.05^Aa	3.45±0.26^Bab	6.51±0.19^Cab	14.77±0.01^Bab	0.79±0.04^ABa
	9	0.20±0.12^Aa	2.21±0.12^Cb	2.69±0.32^Babc	5.55±0.01^Cabc	10.64±0.34^Cbc	1.09±0.07^Aa
	23	0.27±0.23^Aa	1.57±0.01^Bb	1.04±0.45^Ac	2.46±1.24^Bbc	5.34±1.92^Bc	0.85±0.16^Ba
	24	0.15±0.01^Ba	2.12±0.01^Bb	2.69±0.04^Aabc	6.00±0.82^Aab	10.96±1.50^Bbc	1.21±0.01^Aa
	34	0.78±0.11^Aa	2.82±0.43^Cb	2.37±0.44^Bbc	4.28±0.34^Bbc	10.25±0.94^Bc	0.69±0.35^Aa
	37	0.89±0.22^Aa	4.69±0.31^Aa	3.48±0.52^Aa	8.02±0.22^Aa	17.07±0.83^Aa	0.90±0.13^Aa
M	3	0.26±0.06^Ac	1.82±0.37^Bef	1.04±0.18^Ad	4.06±0.44^Ae	7.18±0.34^Ac	1.20±0.55^Aa
	5	0.23±0.01^Ac	2.00±0.01^Ae	2.19±0.01^Ac	2.08±0.01^ABAf	6.50±0.01^ABc	0.47±0.01^Bb
	8	0.24±0.00^Cc	4.34±0.00^Ab	3.47±0.06^Bb	7.31±0.45^BCbc	15.36±1.43^Bb	0.91±0.01^Aab
	9	0.41±0.22^Ac	3.64±0.06^Bbc	3.51±0.23^ABab	6.21±0.33^BCcd	13.77±0.018^Bb	0.83±0.10^Bab
	23	0.30±0.01^Ac	1.16±0.12^Af	1.18±0.01^Ad	2.65±0.01^ABf	5.29±0.27^Ac	1.00±0.09^Aab
	24	0.63±0.03^Ab	2.58±0.19^Bcd	2.39±0.26^Ab	6.02±0.95^Ab	11.61±1.74^Bb	1.08±0.04^Aab
	34	2.01±0.01^Ba	2.36±0.01^Cde	3.29±0.18^ABb	5.75±1.44^Bd	13.41±0.15^Bb	0.75±0.01^Aab
	37	0.70±0.27^Ab	5.84±0.86^Aa	3.87±0.38^Aa	8.85±1.43^Aa	19.26±0.45^Aa	0.87±0.22^Aab
L	3	0.87±0.28^Ab	4.17±0.98^ABb	2.85±0.47^Acd	4.14±0.46^Ag	12.03±3.99^Ab	1.12±0.17^Aa
	5	0.14±0.01^Ad	2.31±0.01^Ad	1.47±0.26^Af	4.89±0.06^ABfg	8.81±0.30^ABc	1.25±0.06^Aa
	8	1.45±0.04^Acd	5.76±1.68^Aa	5.26±0.56^Aa	0.23±0.33^ABbc	20.69±1.40^Aa	0.66±0.03^Cb
	9	0.38±0.10^Acd	4.86±0.57^Aab	3.42±0.28^ABc	6.62±0.31^Bde	15.26±0.70^ABb	0.77±0.01^Bb
	23	0.35±0.02^Acd	1.84±0.27^Acd	1.80±0.09^Aef	3.20±0.08^Ag	7.19±0.28^Ad	0.83±0.08^Bb
	24	0.69±0.03^Abc	4.62±0.08^Aab	2.43±0.38^Ade	7.35±0.19^Acd	15.09±0.30^ABb	0.95±0.09^Aab
	34	0.56±0.22^Abc	4.97±0.30^Bab	3.20±0.02^ABc	5.85±0.95^Bef	14.58±0.93^Bb	0.67±0.11^Ab
	37	1.69±0.62^Aa	3.75±0.54^Abc	4.21±0.12^Ab	9.83±2.16^Aa	19.48±3.21^Aa	1.00±0.11^Aab
CK	3	0.39±0.07^Aa	6.86±1.47^Aa	3.15±0.67^Aa	10.60±0.39^Aa	20.99±0.56^Aa	0.97±0.16^Aab
	5	0.85±0.29^Aa	3.30±0.90^Ab	3.77±0.32^Aa	5.01±0.16^Aa	12.92±2.66^Aa	0.63±0.20^Bb
	8	0.53±0.01^Ba	7.03±0.56^Aa	4.79±0.56^ABa	8.59±0.67^Aa	20.94±1.03^Aa	0.70±0.04^BCab
	9	0.57±0.36^Aa	4.08±0.04^ABab	3.68±0.12^Aa	7.56±0.39^Aa	15.89±0.61^Aa	0.91±0.04^ABab
	23	0.37±0.10^Aa	3.30±0.80^Aab	2.65±0.93^Aa	8.51±0.66^Aa	14.83±0.35^Aa	1.35±0.11^ABab
	24	0.45±0.19^ABa	3.64±0.21^Ab	3.60±0.25^Aa	7.54±0.022^Aa	15.24±0.45^Aa	0.98±0.06^Aab
	34	0.69±0.15^Aa	7.08±0.18^Aa	5.22±0.53^Aa	11.96±0.15^Aa	24.96±1.01^Aa	0.92±0.05^Aab
	37	1.44±0.67^Aa	4.72±1.24^Aab	3.53±1.38^Aa	11.18±0.61^Aa	20.87±1.06^Aa	1.03±0.23^Aa

磷水平 P levels	无性系 Clones	磷素吸收效率 Phosphorus absorption efficiency
磷水平 P levels	无性系 Clones	1年生叶 One-year leaf	2年生叶 Two-year leaf	茎 Stem	根 Root	全株 Total
H	3	0.11±0.01^Bc	0.97±0.46^Cd	1.52±0.77^Bde	3.84±0.15^Ce	6.43±0.39^Ad
	5	0.35±0.18^Bab	1.23±0.63^Bcd	4.21±0.49^Abc	2.81±0.45^Ce	8.59±0.75^Ccd
	8	0.20±0.01^Cbc	3.88±0.45^Cb	5.64±0.74^Bab	17.66±0.52^Bb	27.36±2.71^Bb
	9	0.10±0.04^Bc	2.52±0.81^Bbc	2.44±0.54^Bde	9.72±0.76^Ccd	14.77±1.16^Cc
	23	0.05±0.03^Bc	0.74±0.23^Bd	1.02±0.40^Be	2.99±0.15^Be	4.80±0.75^Bd
	24	0.03±0.00^Cc	3.03±0.03^Cb	2.77±0.24^Ccd	10.35±1.55^Dc	16.18±1.81^Cc
	34	0.15±0.04^Cc	3.25±0.88^Cb	2.30±0.43^Cde	4.78±0.78^Bde	10.47±1.11^Ccd
	37	0.42±0.09^Ba	7.42±0.78^Aa	7.16±1.27^Ba	22.79±1.52^Ba	37.79±3.66^Ba
M	3	0.08±0.01^Bde	1.68±0.57^Ce	1.35±0.28^Bd	10.54±1.27^Bcd	13.64±2.12^Ce
	5	0.12±0.01^Bcde	1.86±0.04^Be	2.61±0.01^Bc	3.37±0.01^Cd	10.96±0.08^Ce
	8	0.02±0.01^De	6.99±0.09^Cb	4.55±0.08^Bb	13.60±0.75^Bc	45.15±0.92^Bb
	9	0.23±0.09^ABbc	4.15±0.07^Bd	3.41±0.33^Bbc	16.22±1.44^Bc	24.01±1.94^Bd
	23	0.14±0.01^Bcd	1.14±0.17^Be	1.19±0.19^Bd	5.09±0.06^ABde	7.55±0.43^Be
	24	0.20±0.01^Bc	5.51±0.35^Bc	4.34±0.35^Cb	29.12±4.66^Bab	39.17±3.94^Bbc
	34	0.97±0.01^Abc	3.28±0.11^Cd	2.31±0.37^Ccd	23.93±4.36^Ab	30.49±4.84^Bcd
	37	0.34±0.01^Bb	12.56±1.31^Aa	8.69±1.23^ABa	32.07±4.23^ABa	53.66±6.87^ABa
L	3	0.37±0.10^Ab	8.03±1.65^Bbc	5.37±0.82^Acd	18.93±0.93^Ade	32.70±3.51^Bcde
	5	0.11±0.01^Bb	4.58±0.88^Bbc	2.88±0.64^Bde	14.88±1.89^Be	22.43±3.42^Bde
	8	0.34±0.03^Bb	16.98±4.42^Ba	15.81±2.21^Aa	48.72±6.85^Aa	81.84±13.51^Aa
	9	0.23±0.05^ABb	8.80±2.06^Ab	3.89±0.86^Bde	25.69±0.99^Ad	38.60±3.96^Acd
	23	0.11±0.03^Bb	3.55±0.91^Bc	2.35±0.21^ABe	9.43±1.62^Ae	15.44±2.76^ABe
	24	0.51±0.04^Ab	9.43±0.32^Ab	8.03±2.08^Ac	37.00±1.38^Abc	54.96±3.81^Abc
	34	0.28±0.08^BCb	8.46±0.31^Bbc	4.84±0.06^Bde	28.46±4.66^Acd	42.03±3.12^Bc
	37	2.44±0.17^ABa	5.31±1.02^Abc	12.10±1.09^ABb	43.30±3.51^Aab	63.15±5.79^Ab
CK	3	0.22±0.03^Bb	24.52±4.05^Ab	7.11±1.36^Ac	21.62±3.41^Ac	53.46±4.84^Abcd
	5	1.27±0.33^Ab	12.55±3.48^Ac	9.93±0.91^Abc	26.15±1.38^Abc	49.90±6.09^Acd
	8	0.75±0.01^Ab	36.99±2.63^Aa	14.57±1.27^Aab	44.04±5.33^Aa	96.35±9.24^Aa
	9	0.44±0.02^Ab	8.73±0.58^Ac	7.07±0.16^Ac	17.45±0.87^Bcd	39.69±1.82^Ad
	23	0.34±0.07^Ab	8.54±2.14^Ac	6.63±1.51^Ac	9.10±2.51^Ad	24.61±4.22^Ae
	24	0.36±0.11^ABb	9.32±0.51^Ac	12.46±0.89^Aab	20.31±1.23^Cc	62.45±2.73^Abc
	34	0.35±0.06^Bb	15.09±0.47^Ac	16.15±1.71^Aa	31.75±2.50^Ab	63.33±4.74^Abc
	37	3.88±0.32^Aa	13.82±1.98^Ac	13.77±3.89^Aab	28.98±8.37^ABbc	65.46±9.55^Ab

磷水平 P levels	无性系 Clones	磷素吸收效率 Phosphorus absorption efficiency
磷水平 P levels	无性系 Clones	1年生叶 One-year leaf	2年生叶 Two-year leaf	茎 Stem	根 Root	全株 Total
H	3	0.11±0.01^Bc	0.97±0.46^Cd	1.52±0.77^Bde	3.84±0.15^Ce	6.43±0.39^Ad
	5	0.35±0.18^Bab	1.23±0.63^Bcd	4.21±0.49^Abc	2.81±0.45^Ce	8.59±0.75^Ccd
	8	0.20±0.01^Cbc	3.88±0.45^Cb	5.64±0.74^Bab	17.66±0.52^Bb	27.36±2.71^Bb
	9	0.10±0.04^Bc	2.52±0.81^Bbc	2.44±0.54^Bde	9.72±0.76^Ccd	14.77±1.16^Cc
	23	0.05±0.03^Bc	0.74±0.23^Bd	1.02±0.40^Be	2.99±0.15^Be	4.80±0.75^Bd
	24	0.03±0.00^Cc	3.03±0.03^Cb	2.77±0.24^Ccd	10.35±1.55^Dc	16.18±1.81^Cc
	34	0.15±0.04^Cc	3.25±0.88^Cb	2.30±0.43^Cde	4.78±0.78^Bde	10.47±1.11^Ccd
	37	0.42±0.09^Ba	7.42±0.78^Aa	7.16±1.27^Ba	22.79±1.52^Ba	37.79±3.66^Ba
M	3	0.08±0.01^Bde	1.68±0.57^Ce	1.35±0.28^Bd	10.54±1.27^Bcd	13.64±2.12^Ce
	5	0.12±0.01^Bcde	1.86±0.04^Be	2.61±0.01^Bc	3.37±0.01^Cd	10.96±0.08^Ce
	8	0.02±0.01^De	6.99±0.09^Cb	4.55±0.08^Bb	13.60±0.75^Bc	45.15±0.92^Bb
	9	0.23±0.09^ABbc	4.15±0.07^Bd	3.41±0.33^Bbc	16.22±1.44^Bc	24.01±1.94^Bd
	23	0.14±0.01^Bcd	1.14±0.17^Be	1.19±0.19^Bd	5.09±0.06^ABde	7.55±0.43^Be
	24	0.20±0.01^Bc	5.51±0.35^Bc	4.34±0.35^Cb	29.12±4.66^Bab	39.17±3.94^Bbc
	34	0.97±0.01^Abc	3.28±0.11^Cd	2.31±0.37^Ccd	23.93±4.36^Ab	30.49±4.84^Bcd
	37	0.34±0.01^Bb	12.56±1.31^Aa	8.69±1.23^ABa	32.07±4.23^ABa	53.66±6.87^ABa
L	3	0.37±0.10^Ab	8.03±1.65^Bbc	5.37±0.82^Acd	18.93±0.93^Ade	32.70±3.51^Bcde
	5	0.11±0.01^Bb	4.58±0.88^Bbc	2.88±0.64^Bde	14.88±1.89^Be	22.43±3.42^Bde
	8	0.34±0.03^Bb	16.98±4.42^Ba	15.81±2.21^Aa	48.72±6.85^Aa	81.84±13.51^Aa
	9	0.23±0.05^ABb	8.80±2.06^Ab	3.89±0.86^Bde	25.69±0.99^Ad	38.60±3.96^Acd
	23	0.11±0.03^Bb	3.55±0.91^Bc	2.35±0.21^ABe	9.43±1.62^Ae	15.44±2.76^ABe
	24	0.51±0.04^Ab	9.43±0.32^Ab	8.03±2.08^Ac	37.00±1.38^Abc	54.96±3.81^Abc
	34	0.28±0.08^BCb	8.46±0.31^Bbc	4.84±0.06^Bde	28.46±4.66^Acd	42.03±3.12^Bc
	37	2.44±0.17^ABa	5.31±1.02^Abc	12.10±1.09^ABb	43.30±3.51^Aab	63.15±5.79^Ab
CK	3	0.22±0.03^Bb	24.52±4.05^Ab	7.11±1.36^Ac	21.62±3.41^Ac	53.46±4.84^Abcd
	5	1.27±0.33^Ab	12.55±3.48^Ac	9.93±0.91^Abc	26.15±1.38^Abc	49.90±6.09^Acd
	8	0.75±0.01^Ab	36.99±2.63^Aa	14.57±1.27^Aab	44.04±5.33^Aa	96.35±9.24^Aa
	9	0.44±0.02^Ab	8.73±0.58^Ac	7.07±0.16^Ac	17.45±0.87^Bcd	39.69±1.82^Ad
	23	0.34±0.07^Ab	8.54±2.14^Ac	6.63±1.51^Ac	9.10±2.51^Ad	24.61±4.22^Ae
	24	0.36±0.11^ABb	9.32±0.51^Ac	12.46±0.89^Aab	20.31±1.23^Cc	62.45±2.73^Abc
	34	0.35±0.06^Bb	15.09±0.47^Ac	16.15±1.71^Aa	31.75±2.50^Ab	63.33±4.74^Abc
	37	3.88±0.32^Aa	13.82±1.98^Ac	13.77±3.89^Aab	28.98±8.37^ABbc	65.46±9.55^Ab

磷水平 P levels	无性系 Clones	磷素利用效率 Phosphorus use efficiency
磷水平 P levels	无性系 Clones	1年生叶 One-year leaf	2年生叶 Two-year leaf	茎 Stem	根 Root	全株 Total
H	3	1.39±0.23^Aabc	1.58±0.02^Bd	2.38±0.66^Aab	2.12±0.28^Bcd	1.95±0.66^Bb
	5	1.62±0.78^Aa	1.62±0.32^ABd	0.86±0.00^Cd	1.49±0.24^Ade	2.12±0.10^Bc
	8	0.50±0.02^Bbc	5.26±0.524^Aa	2.12±0.05^Bbc	2.41±0.11^Bbcd	2.55±0.17^Ba
	9	0.39±0.16^Ac	2.03±0.51^BCcd	3.00±0.17^Ba	3.30±0.93^Aab	2.55±0.50^Aa
	23	1.56±0.09^Aab	3.50±1.04^Aab	1.07±0.18^Ad	2.02±0.67^Acde	1.90±0.48^Ab
	24	0.73±0.01^BCabc	1.48±0.01^Ad	2.62±0.07^Aab	3.48±0.15^Aa	2.51±0.23^Aa
	34	0.99±0.18^Babc	1.02±0.07^Bd	1.69±0.22^Bc	1.09±0.05^ABe	2.05±0.04^Ac
	37	1.91±0.25^Aa	2.97±0.03^Abc	1.70±0.06^Ac	2.83±0.08^Aabc	2.46±0.02^Aa
M	3	0.86±0.07^Acd	2.01±0.07^ABcd	0.80±0.02^Bf	1.57±0.04^Cd	1.41±0.02^Ce
	5	0.45±0.01^Bd	2.15±0.03^Abcd	1.84±0.00^Bd	1.28±0.01^ABd	1.53±0.01^Ae
	8	3.84±0.60^Aa	2.70±0.03^Bab	2.65±0.01^Ac	3.93±0.09^ABa	2.39±0.02^Aa
	9	0.75±0.18^Acd	3.19±0.01^Aa	3.62±0.01^Ab	2.38±0.02^ABb	2.35±0.01^Ab
	23	0.65±0.02^Ad	1.18±0.11^Be	1.18±0.14^Ae	1.38±0.01^ABd	1.21±0.06^Af
	24	1.97±0.01^Ab	1.78±0.53^Ade	2.65±0.05^Ac	1.97±0.21^Bc	2.00±0.02^Bd
	34	1.37±0.01^Aa	2.38±0.00^Bde	2.18±0.09^Aa	1.58±0.02^Ad	1.99±0.09^Bd
	37	1.76±0.15^ABbc	3.00±0.02^Aa	2.00±0.05^Ad	2.72±0.12^ABb	2.27±0.13^ABc
L	3	2.06±0.26^Aa	2.17±0.19^Ab	1.51±0.08^ABcd	4.41±0.07^Aa	1.36±0.11^Aa
	5	0.19±0.01^Bd	1.19±0.16^Bc	0.75±0.01^De	1.62±0.13^Acd	1.15±0.08^Bf
	8	0.59±0.02^Bcd	1.96±0.21^BCbc	1.75±0.01^Cc	1.40±0.08^Cde	1.56±0.01^Bde
	9	0.64±0.07^Ac	2.71±0.14^ABab	3.05±0.23^Ba	1.71±0.03^BCcd	2.07±0.01^Aa
	23	1.12±0.14^Ab	2.29±0.01^ABab	1.38±0.04^Ad	1.91±0.30^Abc	1.18±0.12^Ac
	24	0.94±0.03^Bbc	2.26±0.02^Aab	0.74±0.10^Be	1.46±0.11^Bcd	1.36±0.02^Cef
	34	1.12±0.21^Bb	3.11±0.68^Aa	2.12±0.01^Bb	1.20±0.06^ABe	1.71±0.03^Ccd
	37	1.20±0.02^Bb	2.66±0.02^Aab	1.47±0.05^Acd	2.23±0.18^Bb	1.93±0.06^Bbc
CK	3	0.70±0.06^Ab	1.92±0.19^ABb	1.40±0.11^Bd	0.46±0.05^Dbc	1.02±0.10^Dc
	5	0.57±0.09^ABb	1.49±0.02^Bcd	2.29±0.01^Aa	0.87±0.03^Ba	1.08±0.04^Bb
	8	0.38±0.01^Bb	1.34±0.04^Cd	1.58±0.09^Ccd	0.52±0.02^Db	0.91±0.03^Bcd
	9	0.74±0.22^Ab	1.91±0.07^Cb	1.92±0.03^Cb	0.78±0.01^Ca	1.26±0.01^Bb
	23	0.40±0.05^Ab	1.28±0.08^Bd	1.11±0.04^Ae	0.77±0.12^Ba	0.96±0.07^Bc
	24	0.57±0. 12^Cb	1.42±0.03^Acd	1.04±0.02^Be	0.64±0.02^Cab	0.91±0.03^Dcd
	34	1.38±0.14^Ba	3.32±0.01^Aa	1.69±0.04^Bbc	0.86±0.04^Ba	1.54±0.04^Da
	37	0.53±0.12^Cb	1.67±0.09^Bbc	0.90±0.17^Be	0.43±0.08^Cc	0.74±0.11^Cd