氮磷钾肥不同配比对甜瓜产量的效应

Effect of Different Ratios of Nitrogen,Phosphorus and Potassium Application on Yield Resporses of Muskmelon

根据田间试验结果建立了阎良地区的甜瓜肥料效应函数。在中等土壤肥力条件下,甜瓜的最佳经济产量为40 879 kg/hm2,氮、磷、钾肥料最佳施用量为N 116.25 kg/hm2,P2O564.35 kg/hm2,K2O 129.00kg/hm2,N、P2O5、K2O质量比为1∶0.55∶1.11。氮、磷、钾肥在一定施用量范围内对甜瓜增产和增效作用为钾肥大于氮肥,氮肥大于磷肥。

Based on data from the field test,we established the fertilizer effect function of muskmelon in Yanliang district.The results showed that for the muskmelon grown in middle-level fertility soil,the best economic output is 40 879 kg/hm2;the best fertilization combination is N 116.25 kg/hm2,P2O5 64.35 kg/hm2,and K2O 129.00 kg/hm2,the appropriate ratio is N∶P2O5 ∶K2O=1∶0.55∶1.11.Meanwhile,the experiment also indicates that,to a certain range,potassium fertilizer showed the most remarkable positive effect on muskmelon production and economic efficiency,followed by nitrogen,and phosphorus had the least effect.