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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 clarify the impact of different weed community hazards on the yield loss of spring soybean in Heilongjiang Province, artificial weed control in field plots in 2010-2011 was used to study the effects of mixed weed community, grass weed community, Relationship between Weed Community and Spring Soybean Yield Loss. The results showed that the effects of different weed community hazards on the yield loss of spring soybean were quite different. The yield loss of spring soybean was the highest (75.07% ~ 91.51%) in the mixed weed community, followed by the grass weed community (61.62% -78.20%) and the broad-leaved weed community (67.54% ~ 70.42% Little difference in soybean yield. Spring soybean yield loss rate and weed density and biomass were positively correlated.