摘要
4种阔叶优势杂草对小麦产量影响机理不同,在相同密度下,对小麦产量影响存在差异,在杂草种群的层次上,随着杂草种群密度增加,小麦减产量成倍增加。近年来,随着气候、耕作条件等条件改变,农田杂草构成发生了一定改变。
The effect mechanism of four dominant broad-leaf weeds on wheat yield was different, and the effect on wheat yield was different under the same density. At the level of weed population, with the increase of weed population density,wheat yield decreased exponentially. In recent years, with the change of climate, farming conditions and other conditions,the composition of farmland weeds has changed.
作者
张贵启
Zhang Guiqi(Xiaoyi Urban and Rural Environmental Health Management Commission,Xiaoyi 032300,Shanxi,Chin)
出处
《农业技术与装备》
2018年第3期75-77,共3页
Agricultural Technology & Equipment
关键词
杂草
麦田
影响
产量
Weeds
Catcher
Impact
Production
