栽培措施对青贮玉米粗脂肪含量及产量的影响  

Effect of Different Cultivation Measures on Crude Fat Content and Yield of Silage Maize

作　　者：郭顺美[1] 刘景辉[2] 纪春香[1] 金智[1] 薛峰[1] 焦立新[2] 

机构地区：[1]呼和浩特市园艺科技试验中心,呼和浩特010070 [2]内蒙古农业大学农学院,呼和浩特010019

出　　处：《玉米科学》2007年第1期115-119,共5页Journal of Maize Sciences

基　　金：呼和浩特市科技攻关计划项目(2003-1-农社-07)

摘　　要：采用3因素最优饱和设计,系统地研究了氮肥、磷肥与种植密度3因素对不同收获时期青贮玉米粗脂肪含量及产量的影响。结果表明:N、P与密度是影响粗脂肪含量与产量的重要因子。随着收获期推迟,密度与N对粗脂肪含量的作用逐渐增强,P的作用逐渐减弱。对粗脂肪产量的作用因不同收获期而异。总的来说,随N、P用量的增加,青贮玉米整株粗脂肪的含量及产量均呈单峰曲线变化,随密度的增大则略呈下降趋势。获得较高粗脂肪产量(170～390kg/hm2)的适宜施N量为165～225kg/hm2,施P量为65～140kg/hm2。In this trial, effects of N fertilizer amount, P fertilizer amount and plant density to crude fat content and yield of different silage maize in different harvest periods were studied, applying 3 factors optimum saturation designing. It showed that N fertilizer amount, P fertilizer amount and plant density played important roles in crude fat content and yield of silage maize. The effects of N amount and density to crude fat content and yield increased, and the effect of P amount decreased with the postponing of growth stage. The effects of three factors are different because of different harvest periods. Crude fat content and yield of maize showed single-peaked curve with the increasing of N and P amounts, decreased with the increasing of density. The suitable N and P amount were 165 - 225 kg/ha and 65 - 140 kg/ha and the crude fat yield will reach 170 - 390 kg/ha.

关 键 词：青贮玉米 栽培措施 粗脂肪含量 粗脂肪产量 

分 类 号：S513.04[农业科学—作物学]