氮磷钾配比及密度对油菜产量和经济效益的影响  

Effects of Application Amounts of Nitrogen,Phosphate and Potassium and Planting Density on the Yield and Economic Benefits of Rape

作　　者：韩梅[1] 陈占全[1] 郭石生[1] 张启芳[2] 

机构地区：[1]青海省农林科学院土壤肥料研究所,青海西宁810016 [2]青海省湟中县农业技术推广中心,青海湟中811600

出　　处：《河北农业科学》2009年第8期31-33,共3页Journal of Hebei Agricultural Sciences

基　　金：绿色农业科学研究与示范项目(2007-6)

摘　　要：采用4因素3水平正交设计,研究了不同氮、磷、钾肥用量及种植密度对油菜产量和经济效益的影响,以期筛选合理的种植密度及最佳施肥量,获得最佳的油菜高产栽培模式。结果表明:尿素、过磷酸钙、氯化钾和密度4种因素3种水平应用于油菜,密度对植株形态影响较大,施肥量对其影响较小;因素对产量和经济效益的影响顺序是氯化钾(过磷酸钙(尿素(密度。尿素、过磷酸钙和氯化钾对油菜产量的影响达到显著水平。确定最优组合为尿素120 kg/hm2+过磷酸钙1 153 kg/hm2+氯化钾225 kg/hm2+密度26万株/hm2。The effects of application amounts of nitrogen, phosphate and potassium and planting density on the yield and economic benefits of rape were studied using the orthogonal design of four factors and three levels. The results showed that the effect of planting density had great influence and the fertilizer rate had a little influence on plant morphdagy. The order of factors to yield and economic benefits was that potassium chloride 〉 superphosphate 〉 urea 〉 planting density. The effects of urea, superphosphate and potassium chloride on the yield of rape reached significant level. The optimal combination was 120 kg/hm^2 urea ＋ 1 153 kg/hm^2 super phosphate ＋ 225 kg/hm^2 potassium chloride with the planting density of 260 000 plants per hectare.

关 键 词：肥料 施肥量 种植密度 油菜 产量 经济效益 “3414”肥效试验 

分 类 号：S565.4[农业科学—作物学]