不同种植方式春玉米田杂草的生态经济阈值研究  

Eco-economic Threshold of Weeds in Spring Corn Field under Different Planting Methods

作　　者：殷红[1] 刘芳[1] 李建东[1] 殷萍萍[1] 王国骄[1] 燕雪飞[1] 

机构地区：[1]沈阳农业大学农学院,辽宁沈阳110161

出　　处：《作物杂志》2009年第6期49-52,共4页Crops

基　　金：辽宁省教育厅高等学校创新团队科研项目(2009T088)

摘　　要：在不同种植方式下,通过对玉米田杂草不同密度对玉米产量构成因素的影响,及防治中生态经济阈值模型的初步研究,建立了杂草密度和玉米产量损失率之间的函数关系。研究结果表明,清种玉米田中杂草治理的生态经济阈值为7.41～8.00株/m2,间种苜蓿田中杂草治理的生态经济阈值为8.43～9.47株/m2。当田间杂草密度低于其生态经济阈值时,不需要防除。Under different planting methods,function equations between density of weeds in spring corn field and corn yield components and their eco-economic threshold model were established.The results showed that the eco-economic threshold of spring maize weeds in the corn field was 7.41~8.00 plants per square meter,and was 8.43~9.47 plants per square meter in intercropping of corn and alfalfa.When the weed density was lower than the eco-economic thresholds in fields,no weed controlling measures might be taken.

关 键 词：种植方式 玉米田杂草 生态经济阈值 

分 类 号：S451[农业科学—植物保护]