密度和肥料对赣豆4号产量和经济性状的影响

Effect of Density and NPK on the Yield and Economic Characters of Gandou No.4

研究了不同N、P、K及密度配合对赣豆 4号产量和经济性状的影响。结果表明 :处理 6 (A2 B3 C1D2 )、8(A3 B2 C1D3 )、4 (A2 B1C2 D3 )产量最高 ,分别为 2 82 4kg/hm2 、2 818.5kg/hm2 和 2 816 .2 5kg/hm2 。密度和K肥对产量影响达极显著水平 ,N肥影响达显著水平 ,而P肥对产量的作用不大。K能促进产量构成因子的形成 ,提高单株生产力。密度增大 ,株高增加 ,分枝增多 ,但单株荚数、粒数、单株生产力减少 ,百粒重减轻。随着N肥的增加 ,植株有所增高 ,分枝有所减少 ,单株荚数、粒数、单株生产力、百粒重均有所降低。P对促进分枝、提高单株荚数有一定的作用。

The effect of different N, P, K and density match on the yield and economic characters of Gandou No.4 were studied. The result showed that the highest yields in this experiment were from treatments No.6(A 2B 3C 1D 2), 8(A 3B 2C 1D 3)and 4(A 2B 1C 2D 3), which were 2824kg/hm 2, 2818.5kg/hm 2, 2816.25kg/hm 2 respectively. The effects of density and K on the yield were very significant, and that of N was significant, but that of P was not significant. Pods per plant, seeds per plant, weight per plant, 100-seed weight decreased with the increase of density and N and the decrease of K.Plant height increased with the increase of density and N. Branches increased with the increase of density and the decrease of N. P promoted branches and increased pods per plant.