三种植物对土壤磷吸收和富集能力的比较

吴浩, 卢志军, 黄汉东, 江明喜

Comparison of phosphorus uptake and accumulation capacity among three plant species

WU Hao,LU Zhi-Jun,HUANG Han-Dong,JIANG Ming-Xi

表2 五种磷浓度处理下3种植物各生长时期磷(P)富集系数(平均值±标准误差, n = 3)

Table 2 Bioaccumulation coefficients for three plant species over different growth periods at five phosphorus (P) concentration (mean ± SE, n = 3)

P处理 P treatment (mg·kg^-1)	向日葵 Helianthus annuus			苏丹草 Sorghum sudanense			南瓜 Cucurbita moschata
P处理 P treatment (mg·kg^-1)	4周 4 weeks	7周 7 weeks	10周 10 weeks	4周 4 weeks	7周 7 weeks	10周 10 weeks	4周 4 weeks	7周 7 weeks	10周 10 weeks
0	4.56 ± 0.16^Aa	3.40 ± 0.40^Aabc	4.35 ± 0.29^Ae	4.92 ± 0.50^Aa	3.87 ± 0.26^Ba	2.37 ± 0.15^Ca	3.96 ± 0.45^Ab	4.16 ± 0.17^Ac	3.54 ± 0.31^Ad
100	4.98 ± 0.14^Aa	3.83 ± 0.16^Bc	5.60 ± 0.42^Ad	5.48 ± 0.34^Aa	3.98 ± 0.47^Ba	2.73 ± 0.23^Ca	5.16 ± 0.25^Aab	5.72 ± 0.25^Ab	4.75 ± 0.16^Ac
300	4.65 ± 0.41^Ba	5.23 ± 0.11^Bb	7.36 ± 0.45^Ac	5.78 ± 0.31^Aa	3.84 ± 0.19^Ba	2.86 ± 0.07^Ca	5.30 ± 0.74^Aab	5.77 ± 0.33^Ab	5.66 ± 0.24^Abc
500	5.31 ± 0.67^Ca	6.78 ± 0.16^Ba	9.00 ± 0.21^Ab	5.33 ± 0.29^Aa	3.98 ± 0.32^Ba	3.24 ± 0.32^Ba	5.86 ± 0.37^Aa	5.70 ± 0.19^Ab	5.85 ± 0.42^Ab
700	5.28 ± 0.27^Ca	7.79 ± 0.63^Babc	11.39 ± 0.31^Aa	5.88 ± 0.16^Aa	4.32 ± 0.22^Aa	4.47 ± 0.60^Aa	6.19 ± 0.28^Aa	7.20 ± 0.57^Aa	7.90 ± 0.32^Aa