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粘虫是我省粮食作物的主要害虫之一,常因其暴发为害,而使农作物遭受很大损失。自1953年全省粘虫大发生后,省内二代粘虫常发区多集中在中部各灌区,陇东、陇南属偶发区。1983年二代粘虫在陇东、陇南地区严重发生,其发生面积之广,为害程度之重是近30年所未见。为了查明粘虫发生为害情况,分析形成粘虫大发生的主要因素,提高今后测报准确性,我们对上述地区粘虫发生情况及时作了调查,并同有关地、县农技站,气象部门座谈和访问部分老农,分析总结造成大发生的主要原因。
Mythimna separata is one of the major pests of food crops in our province and often causes great losses to crops due to its outbreak. Since the occurrence of armyworm in the province in 1953, the second generation of the second generation of armyworm in the province have been mostly concentrated in irrigated areas in central China. Longdong and Longnan are sporadic areas. In 1983 the second generation of armyworms in Longdong, Longnan area serious occurrence of its area is wide, the extent of damage is not seen in nearly 30 years. In order to identify the occurrence of armyworm disease, analyze the main factors that led to the occurrence of armyworm and increase the accuracy of the report in the future. We conducted a timely investigation of the occurrence of armyworm in the above areas and, together with the relevant prefectural and county agricultural stations, To discuss and interview some of the peasants and analyze and summarize the major causes of the big occurrence.