摘要
为了明确不同杂草群落危害对黑龙江春大豆产量损失的影响,在2010～2011年间采用田间小区人工控制杂草的方法,研究了春大豆田发生的混合杂草群落、禾本科杂草群落、阔叶杂草群落与春大豆产量损失的关系.结果表明,不同杂草群落危害对春大豆产量损失的影响有较大差异.春大豆产量损失率以混合杂草群落最高（75.07％～91.51％）,其次为禾本科杂草群落（61.62％～78.20％）与阔叶杂草群落（67.54％～70.42％）,两者对大豆产量影响差异不大.春大豆产量损失率与杂草的密度和生物量呈正相关.
In order to determine the influences of different weed communities on the yield losses of spring soybean in Hei- longjiang province, relationship between spring soybean yield loss and mixed weeds community, grass community, broadleaf weeds community in spring soybean fields was studied by artificial controlling weeds in field plots from 2010 to 2011. The results showed that there was great difference on spring soybean yield loss caused by different weeds communities, spring soybean yield loss rates caused by mixed weed community, grass community, broadleaf weeds community were 75.07%～91.51%, 61.62%-78.20%, 67.54%～70.42%, respectively. Spring soybean yield loss rate from high to low was： mixed weeds community 〉 grass community broadleaf weeds community. Correlations between spring soybean yield loss rate and weed density, and between the rate and biomass were both positive.
出处
《中国植保导刊》
北大核心
2014年第6期10-12,9,共4页
China Plant Protection
基金
公益性行业(农业)科研专项(200903004)
关键词
春大豆
杂草群落
危害
产量损失
spring soybean
weed community
disserve
yield loss
