多雨或干旱天气都会加重病虫害的发生。大豆中后期要重点防治好两虫三病。一是防治好大豆食心虫:成虫盛发期,田间大豆长势良好(已封垄)地块,使用80%敌敌畏乳油1.52~25公斤/公顷,用400~500根高粱或玉米等秸秆蘸药,均匀插于 Rainy or dry weather will increase the occurrence of pests and diseases. In the latter part of the soybean should focus on prevention and control of two worms and three diseases. First, the prevention and treatment of soya beans Mothods: adult Shengfa period, the field of soybean growing well (already sealed ridge) plots, the use of 80% dichlorvos EC 1.52 ~ 25 kg / ha, with 400 ~ 500 sorghum or corn and other straw dipped in medicine, uniform Plug in