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消灭成虫是防治草地螟的主要方法之一。1956年3月,内蒙、山西、河北三省区草地螟联防会议上已明确要把草地螟“就地控制,严禁扩大蔓延,消灭在成虫阶段”。两年来内蒙古自治区应用拉网方法防治草地螟,效果显着,1956年6月以前推广的拉网,均按内蒙的式样制。本文根据华北农业科学研究所蝗虫组和草地螟田野试验站的试验和观察,提出以下改进意见。一拉网的改进内蒙式的旧拉网全部用粗纱布制成,网前小后大,口宽1丈,后面幅宽1丈2尺,两侧
Eradication of adult insects is one of the main ways to control Meadow Stem Borer. In 1956 March, Inner Mongolia, Shanxi, Hebei provinces and autonomous regions meadow grasshopper defense meeting has been clearly to the grass borer “control in situ, is strictly prohibited to expand the spread of elimination in the adult stage ”. Inner Mongolia Autonomous Region over the past two years the method of using straw to control Meadow Stem, a significant effect, in June 1956 to promote the network before pulling, according to Inner Mongolia’s style system. In this paper, according to the North China Institute of Agricultural Sciences locust group and field trials of grass-stem borer test and observation, the following improvements. A pull net improvement Inner Mongolia-style old pull nets all made of coarse gauze, net small front big mouth width 1 Zhang, behind the width of 1 feet 2 feet, both sides