膜下滴灌氮、磷、钾耦合效应对加工番茄生长和产量的影响

目的]研究膜下滴灌氮、磷、钾耦合效应对加工番茄生长和产量的影响.方法]通过田间试验,采用"3414"完全试验方案研究不同施肥处理对加工番茄产量和经济效益的影响.结果]氮、磷、钾三元二次方程拟合不可靠;氮、磷、钾的不同配比对加工番茄产量有显著影响,施肥不足造成产量下降,但过量施肥造成旺长,3个肥料相比其中氮素对加工番茄生长影响最大;14个施肥处理中N2P2K2、N2P3K2和N2P2K1处理产量超过9 000 kg/hm2,明显高于其他处理.结论]试验条件下氮、磷、钾三者的比例为9∶3∶2时肥效最佳,可获得较高的产量和效益.

Effect of N,P and K Coupling Action on Growth and Yield of Processing Tomato under Film Drip Irrigation

【Objective】It aimed to study the efffect of N,P and K coupling atcion on growth and yield of processing tomato under film drip irrigation.【Method】A field trial was carried out to study growth and yield of processing tomato by using "3414" complete test scheme of N,P and K fertilizer.【Result】The result showed that the sequare equation of three functions of N,P and K was insignificant;the effect of different proportion N,P and K application on yield of processing tomato was significant,the yield was decreased when using unsufficient fertilizer and the growth was thrived when over-fertilization,the effect of N on processing tomato growth was more significant than that of P and K;the yield of N2P2K2,N2P3K2 and N2P2K1 other treatments was more than 9 000 kg/hm2,which was significant high than the other treatments.【Conclusion】 The best proportion of N∶P∶K was 9∶3∶2,which could gain the highest yield and benefit