干旱地区农业研究Issue(2)：170-175,6.DOI:10.16302/j.cnki.1000-7601.2015.02.028
间作绿肥饲草与减施氮肥对河西绿洲灌区玉米产量和土壤肥力的影响
Effects of intercropping green manure forages and nitrogen-reduction on corn yield and soil fertility in Hexi Oasis Irrigation
摘要
Abstract
To study the effects on corn yield ,economic benefit and soil fertility in different proportions nitrogen-re-duction by the planting system using two kinds of leguminous green manure forages ,needle leaf pea and hairy vetch inter-cropping corn were employed for duration of three years in Hexi Oasis Irrigation .The results showed that effects from ap-plying 90% of the fertilizer amount that farmers often used were the best in corn /needle leaf pea intercropping system , which though resulted in a corn grain yield loss by 0 .63% ,not at a significant level .Nevertheless ,this helped addition-al harvests of needle leaf pea grain by 1 987 .34 kg・hm - 2 and needle leaf pea hay by 1 374 .35 kg・hm - 2 .The economic benefits were the highest ,reaching 36 364 yuan・hm - 2 ,18 .05% higher than that of the farmlands farmers often fertil-ized .Corn grain yields with nitrogen-reduction treatments were all lower than those with often fertilization in corn /hairy vetch intercropping system .But reduction in yield was minimum by only 2 .76% less ,reaching a yield of 14 263 kg・hm - 2 using 90% of the nitrogen fertilizer farmers often utilized ,not at a significant level .This caused additional harvest of hairy vetch hay by 3 175 .47 kg・hm - 2 and the economic benefit was the highest as 32 136 yuan・hm - 2 , 4 .33% higher than that of the farmlands farmers often fertilized .With these two kinds of planting systems ,the contents of soil organic matter ,total nitrogen ,available nitrogen ,available phosphorus and available potassium were not signifi -cantly different from those with often fertilizations by farmers .It could be seen that the intercropping systems of corn /nee-dle leaf pea and corn/hairy vetch could reduce 10% of the nitrogen fertilizer use and the economic benefit of the former was higher than that of latter in Hexi Oasis Irrigation .关键词
绿肥饲草/玉米/间作/减施氮肥/经济效益/土壤肥力Key words
green manure forage/corn/intercropping/nitrogen-reduction/economic benefit/soil fertility分类
农业科技引用本文复制引用
卢秉林,包兴国,张久东,杨新强,杨文玉,李全福,曹卫东..间作绿肥饲草与减施氮肥对河西绿洲灌区玉米产量和土壤肥力的影响[J].干旱地区农业研究,2015,(2):170-175,6.基金项目
农业部行业专项 （）
