大豆菌核病在黑龙江省1986、1987年连续两年大发生,发生面积分别为220万亩和 160万亩。发病株率严重地块达50％以上,甚至绝产,对大豆生产构成严重威胁。 一、室内药剂筛选 用50％甲基托布津、50％多菌灵、30％复方多菌灵、20％粉锈宁、50％速克灵、50％农 利灵、40％菌核净等药剂,均配成50ppm药液,用微量喷雾器喷洒于黑农26号大豆幼苗 的2片复叶上,每盆2株喷药液5毫升,每种药喷3盆,药液干后4小时接菌。病菌为 Stem Stem Sclerosis in Heilongjiang Province in 1986 and 1987 occurred two consecutive years, the occurrence area of ​​220 acres and 160 acres respectively. The incidence of serious cases of block more than 50%, or even abortion, pose a serious threat to soybean production. First, the indoor pharmacy screening with 50% thiophanate-methyl, 50% carbendazim, 30% compound carbendazim, 20% triadimefon, 50% Were dubbed 50ppm liquid solution, with a small amount of spray sprayer on Blackon 26 soybean seedlings of two complex leaves, 2 plants per pot of spray liquid 5 ml, each drug spray 3 pots, 4 hours after the liquid dry bacteria . Bacteria for