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耕葵粉蚧(Trionymus agrestis Wang et Zhang)最早只知寄生高粱根部,80年代末才发现在玉米根部或近地面叶鞘内也能寄生。邯郸市自1993年发现该虫以来,一直呈零星轻发生,1998、1999年两年大部分县暴发玉米耕葵粉蚧,面积达4.3万hm~2,夏玉米幼苗不同程度受害。为此,我们专门立题进行研究,现将近两年对其为害特点和防治对策观察研究结果总结如下:
Trionymus agrestis Wang et Zhang was the first to know the root of parasitic sorghum. It was only found in the late 1980s that it could also parasitize within the sheath of corn or near the ground. Handan City, the insect has been found since 1993, has been sporadic light occurred in 1998 and 1999, most counties outbreaks of corn in summer and 2000 counties, an area of 43,000 hm ~ 2, summer maize seedlings suffer to varying degrees. To this end, we specialize in research, now nearly two years of its harmful characteristics and prevention and control measures observed the results of the study are summarized as follows: