Studies on the difference of phosphorus nutrition characteristics among soybean varieties in Henan Province
The difference of phosphorus nutrition characteristics of 33 soybeans varieties were studied with pot experiment and with two phosphorus fertilizer(P2O5) rate treatments of P0(0 mgAg) and Pl(0.15 mg/kg) to provide evidence for exploration and utilization of soybeans phosphorus efficiency germplasm. The results showed that in P deficient condition, the tested soybean varieties were classified to three classes by dendrogram by those nutrition traits, among which classl (with highest seed yield and P accumulation quantity, and with medium P utilization efficiency) showed best complex phosphorus nutrient trait; in P abundant condition, the tested soybeans varieties were classified to four classes, among which class 1 (with highest seed yield and P accumulation quantity, and with higher P utilization efficiency) showed best complex phosphorus nutrient trait. Statistical analysis showed that the correlation between the plant P accumulation in seedling and harvesting reached over significant Ievel(P0, r = 0.5096* * ;P1, r = 0.3596* ); in seedling, the plant P accumulation had significant correlation with plant dry weight (P0, r = 0. 8124* " ; P1, r = 0. 8724* * ) and dominated the plant growth; in harvesting, the effect of P utilization on seed soybean yield increased;but which still was less than that of P accumulation.
国家科技期刊平台
NSTL
万方数据
维普
