【摘要】 通过大白菜测土配方施肥"3414"试验,结果表明,以氮肥增产效果最佳,钾肥次之,氮磷钾施肥效应为N>K>P。通过三元二次肥料效应模型回归方程算出大白菜667 m2最高产量3 532.82 kg,667 m2N、P2O5、K2O最佳施用量分别为21、3、12 kg,m(N)∶m(P2O5)∶m(K2O)=1∶0.14∶0.57。更多还原

【Abstract】 Based on the"3414"formula fertilization trials by soil testing on cabbage,the results show that: the yield increase effect of nitrogen fertilizer is the best,potash is the second,the NPK fertilization effect on cabbage is N>K>P.Based on the binary cubic form regression equation of fertilizer effect model,the highest yield of cabbage is 3 532.82 kg per 667 m2,the optimum application amount of N,P2O5,K2O is respectively 21,3,12 kg per 667 m2,the recommended fertilization formula is m(N):m(P2O5):m(K2O)= 1:0.14:0.57.更多还原