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90年代末我国小麦-玉米产区推行了小麦秸杆还田、玉米铁茬播种的保护性耕作方式,河北省在全国率先施行。这种新的耕作制度引起了田间生态环境的变化,病虫害的发生也随之变化,呈现出老病害回升,新病虫害出现的特点。2005年7月河北省发现玉米苗期的新害虫──二点委夜蛾,二点委夜蛾是一种由于耕作制度改变所出现的新型生态型害虫,其成虫躲藏在麦秸堆中并产卵于麦秸上,在温湿度适宜环境下,卵
In the late 1990s, China’s wheat-corn producing areas implemented the conservation tillage method of wheat straw returning and sowing of corn stubble. Hebei Province took the lead in the country. The new farming system caused changes in the ecological environment in the field, and the occurrence of pests and diseases also changed. The emergence of old diseases and pests appeared. In July 2005, a new pest in corn seedling was found in Hebei Province - the second generation of the night-stage moth, the second stage of the night-stage moth is a new type of ecological pests that occur due to the tillage system changes, the adults hiding in the straw and produce Eggs on the straw, in a suitable environment for temperature and humidity, eggs