大豆食心虫一年发生一代,发生期很集中。成虫盛发期为5～7天,占总蛾量的80%左右,如能抓住时机进行药剂防治,就能收到较好效果。1964年在辽北地区以科学研究所为中心,包括昌图、开原、铁岭三县的示范繁殖农场和一部分农业技术推广站建立起14个预测预报点,1965年扩大到法库四县21个测报点。 Soybean borer occurs a generation a year, the period is very concentrated. Adult burst period of 5 to 7 days, accounting for about 80% of the total amount of moths, if the opportunity to seize the agent control, you can receive better results. In 1964, 14 research institutes were set up in Liaoning Province as the center, including 14 demonstration and breeding farms in Changtu, Kaiyuan and Tieling counties and some agricultural extension stations. In 1965, it was expanded to 21 counties in Faku County A report point.