摘要
为了探明日光温室嫁接辣椒的氮(N)、钾(K2O)适宜施用量及其与自根辣椒的差异,采用二次饱和D-最优设计,研究N、K2O用量对嫁接和自根辣椒产量的影响,并建立了以N、K2O用量为变量因子,以嫁接和自根辣椒产量为目标函数的二元二次数学模型。对模型解析的结果表明,N、K2O用量对辣椒产量影响显著,二因子存在着交互效应,但以K2O对辣椒的产量影响较大。通过计算机模拟运算,得出本试验条件下嫁接辣椒产量达到49 500 kg/hm2以上的优化施肥方案为N 326.1~752.9 kg/hm2,K2O 630.8~1 116.0 kg/hm2;自根辣椒产量达到48 000 kg/hm2以上的优化施肥方案为N 411.5~606.9 kg/hm2,K2O 868.4~1 168.4 kg/hm2,嫁接辣椒适宜的氮钾配比为嫁接1∶1.96,自根辣椒1∶1.85。
The purpose of this paper is to elucidate the optimum amounts of nitrogen and potassium in grafted peppers which cultivated in solar-greenhouse,and the difference of them between grafted and the own-root plants.The effects of nitrogen and potassium on the yield of grafted and own-root peppers were investigated with the design of two factors and double saturated D-optimal regression. A mathematical model for the optimization was established using nitrogen and potassium amounts as the independent variables,and the yield of grafted and own-root plants as objective function. The results showed that nitrogen and potassium significantly influenced the yield of grafted and own-root peppers,and there were interactive effect between nitrogen and potassium. However,potassium had higher effect on the yield of pepper. Through simulated computation,the schemes of optimized fertilization of grafted and own-root peppers were finally obtained. The yield of grafted pepper could reach to 49 500 kg/ha or more when the fertilizer rates were N 326. 1-752. 9 kg/ha,K2 O 630. 8-1 116. 0 kg/ha; the yield of own-root pepper could reach to 48 000 kg/ha when the fertilizer rates were N 411. 5-606. 9 kg/ha and K2 O 868. 4-1 168. 4 kg/ha. The suitable ratio of N∶ K2 O of grafted pepper was 1∶ 1. 96,and that of own-root pepper was 1∶ 1. 85.
出处
《华北农学报》
CSCD
北大核心
2016年第S1期369-374,共6页
Acta Agriculturae Boreali-Sinica
基金
山东省现代农业产业技术体系建设专项资金(SDAIT-05-10)
山东省农业重大应用技术创新课题(鲁财农指〔2016〕36号)
关键词
嫁接辣椒
氮
钾
产量
日光温室
Grafted peppers
Nitrogen
Potassium
Yield
Solar-greenhouse
