种植密度和施氮量对辽单527产量的影响  

Effect of Planting Density and Nitrogen Fertilizer on Yield of Hybrid Maize Liaodan527

作　　者：陈长青[1] 尤丹[1] 

机构地区：[1]辽宁省农业科学院玉米研究所,沈阳110161

出　　处：《玉米科学》2011年第4期125-127,共3页Journal of Maize Sciences

基　　金：辽西半干旱区玉米水分高效利用高产技术集成研究与示范(2006BAD02A12)

摘　　要：以玉米杂交种辽单527为试材,研究不同种植密度和氮肥量对产量的影响。结果表明,随着种植密度和施氮量的增加,辽单527的产量呈先升高后下降的趋势。通过建立二元二次回归方程得出,种植密度为61 000株/hm2、施氮量在149 kg/hm2时辽单527理论产量最高,灌浆期穗位层叶面积指数也较高。The effects of plant densities and nitrogen fertilizer on yield of Liaodan527 were studied. The results showed that the yield of Liaodan527 was expressed in a single peak curve with planting density and nitrogen fertilizer increased. Dualistic quadratic regression equation can better express the relationship on planting density, nitrogen fertilizer and yield, that showed that the highest yield of Liaodan527 was at 61 000 plant/ha planting density and 149 kg/ha nitrogen fertilizer. The treatment, which got the highest yield, also had higher LAI compare with other planting density and fertilizer treatments, which gave plants sufficient nutrition supply.

关 键 词：玉米 种植密度 氮肥 产量 

分 类 号：S513.04[农业科学—作物学]