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鸭跖草Commelina communis L.分布我国南北旱地,是东北地区大豆田内顽固性杂草,其生命力和繁殖力强,具多分枝特性。盾负泥虫Lema scutellaris(Kraatz.)是鸭跖草天敌,在北方只取食鸭跖草,为探讨盾负泥虫对鸭跖草的自然控制作用,作者做了如下研究。 1 盾负泥虫发生期与鸭跖草生长期同步性观察采用田间系统调查和室内成虫配对饲养进行观察,3年重复观察的结果表明,盾负泥虫1年发生1代,以成虫在土和土块下及枯枝落叶中滞育越冬。鸭跖草1叶1心时(5月
Commelina communis L. Commeina communis L. Distribution of dry land in North and South of China, is a stubborn weed in the soybean fields in Northeast China, its vitality and fertility, with multi-branched characteristics. Lema scutellaris (Kraatz.), A natural enemy of Commelina communis, only feeds on Commelina communis in the North. To investigate the natural control of Commelina communis against Commelina communis, the authors studied the following. Observations on synchronicity of the occurrence of shield negative mud insect and the growth of Commelina communis The field observations and in-house adult parasite observation were conducted. The results of 3-year repeated observation showed that the shield negative insect pest occurred one generation per year, And clods and litter in diapause wintering. Commelina 1 leaf 1 heart (May