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1 五种磷(P)浓度处理下3种植物各生长时期地上部生物量(g)(平均值±标准误差, n = 3)

Table 1 The aboveground biomass of three plant species over different growth periods at five phosphorus (P) concentrations (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	5.43 ± 0.29^Cd	14.68 ± 0.14^Ba	18.93 ± 0.67^Aa	2.66 ± 0.45^Ca	11.00 ± 0.43^Bc	22.87 ± 1.58^Aa	5.24 ± 0.24^Cc	11.43 ± 1.16^Ba	18.02 ± 1.01^Aa
100	7.31 ± 0.38^Cc	15.05 ± 0.48^Ba	18.18 ± 0.75^Aa	3.44 ± 0.32^Ca	9.98 ± 0.49^Bc	25.90 ± 2.79^Aa	8.52 ± 0.23^Ca	13.03 ± 0.75^Ba	19.20 ± 0.64^Aa
300	9.61 ± 0.73^Ca	15.78 ± 1.47^Ba	19.78 ± 0.43^Aa	3.71 ± 0.59^Ca	15.05 ± 1.00^Bb	30.18 ± 1.69^Aa	6.29 ± 0.56^Cbc	12.43 ± 0.15^Ba	19.62 ± 1.22^Aa
500	8.09 ± 0.30^Cbc	14.48 ± 0.62^Ba	22.65 ± 1.05^Aa	2.77 ± 0.65^Ca	15.62 ± 0.84^Bb	24.68 ± 0.64^Aa	6.81 ± 0.08^Cb	12.43 ± 0.84^Ba	17.15 ± 0.73^Aa
700	8.65 ± 0.23^Cab	16.30 ± 0.48^Ba	22.50 ± 2.04^Aa	3.16 ± 0.11^Ca	18.25 ± 0.89^Ba	27.43 ± 3.42^Aa	7.53 ± 0.65^Cab	14.90 ± 0.68^Ba	21.43 ± 0.73^Aa