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本文应用二次通用旋转组合设计,研究了NPK肥用量和配比对辣椒产量的影响,获得了相应的函数模型;通过对模型的优化和解析,得出了辣椒获得最高产量时N的用量为342.5kg/hm2,P2O5用量为112.5kg/hm2,K2O用量为175kg/hm2,此时辣椒产量为23.55t/hm2;试验土壤栽培辣椒适宜的NPK肥用量配比应为N∶P2O5∶K2O=1∶0.33∶0.51。
In this paper, the quadratic universal rotation combination design was used to study the effect of NPK fertilizer dosage and proportion on the yield of pepper, and the corresponding function model was obtained. Through the optimization and analysis of the model, the amount of N was obtained when the yield of pepper was the highest 342.5kg / hm2, the dosage of P2O5 was 112.5kg / hm2, the dosage of K2O was 175kg / hm2, and the yield of pepper was 23.55t / hm2. The suitable ratio of NPK fertilizer for soil culture pepper should be N: P2O5:K2O = 1 : 0.33: 0.51.