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红蜘蛛是危害小麦的大害虫。小麦被害后植株发黄,叶片产生大量斑点,影响抽穗。据我科研队测报点防治试验,防治的比不防治的每亩可增产44斤。 在我地繁殖的麦蜘蛛一般有两种,即麦圆蜘蛛及麦长腿蜘蛛。 一、生活习性: 1.麦圆蜘蛛在我地每年繁殖两代。成虫、卵在麦田土块越冬。3月上旬旬平均温度达4℃,相对湿度在80％时就开始出土危害。到4月下旬,旬平均温度达11℃,相对湿度达70％,是其活动的盛期。到5月上
Red spider is a big pest that endangers wheat. After the wheat is damaged, the plant is yellow, leaves produce a large number of spots, affecting heading. According to my research team reported that the test point prevention and control, prevention and control of non-control per acre can increase 44 kg. There are two kinds of wheat spiders that I breed in general, that is, wheat spider and wheat long-legged spider. First, the habits of life: 1 wheat round spider in my breeding two generations each year. Adults, eggs over winter in the soil in the wheat field. The average temperature in early March reached 4 ℃, the relative humidity at 80% began unearthed the hazard. By the end of April, the average temperature of 10 ℃ reaches 11 ℃ and the relative humidity reaches 70%, which is the peak of its activity. Up to May