论文部分内容阅读
根据各地春季玉米螟冬后基数调查结果,今年大部地区百秆活虫量低于常年和上年,结合气象条件等因素综合分析,全国农业技术推广服务中心预计一代玉米螟在东北西部、新疆北部、黄淮海局部地方偏重发生,华北、东北及黄淮海其他地区中等发生,其他地区多为偏轻发生,全国一代玉米螟发生约1.4亿亩。据春季各地剥秆调查,大部地区冬
According to the survey results of post-winter basal corn borers in spring, most of the live bovines in this year were below normal and last year. According to the comprehensive analysis of meteorological conditions and other factors, the National Agricultural Technology Extension Service Center estimated the generation of corn borers in the western part of Northeast China, Xinjiang In the north, the Huang-Huai-Hai region is heavily localized, while in North China, Northeast China and other parts of the Huang-Huai-Hai area moderately occurs. In other areas, the occurrence of partial lightness occurs more than 140 million mu. According to spring stalk stalk survey, most areas of winter