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绿豆象是小豆的主要仓贮害虫。笔者对北京地区夏播小豆田进行实地取样调查,发现绿豆象在小豆鼓粒初期已将卵产到豆荚上,9月上、中旬为产卵高峰期,并逐渐发育成幼虫侵入豆粒中。绿豆象卵在小豆荚上的空间分布型为聚集分布,其聚集原因是由于环境因素引起的。9月10日─9月15日是控制田间绿豆象产卵及卵发育的较好时机。
Mung bean like bean is the main storage pests. The author conducted a field sampling survey of summer sowing soybean fields in Beijing and found that mung bean had been produced on the pods in the early stage of the bean dug. In September, the middle and upper are the peak of spawning and the larvae gradually develop into the bean grains. Mung bean eggs in the small pods on the spatial distribution of aggregation distribution, its aggregation is due to environmental factors. September 10 ─ September 15 is to control the field mung bean spawning and egg development a better time.