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菜豆枯萎病是系统性侵染的土传病害,一般药剂防治比较困难,我们采用了新的剂型即胶悬剂进行探讨。胶悬剂,在国外是70年代开始研究。它的优点,适合难溶于水和一般有机溶剂的农药品种。近年来,沈阳化工研究院进行了研制,于1979年给我们提供38％多菌灵胶悬剂,对菜豆枯萎病进行了室内、外试验,现小结如下: 一、试验方法 1 室内测定:是采用滤纸抑菌圈法。即把普通培养基(简称PDA),配制成分如下:马铃薯200克,洋菜17克,蔗糖17克,水1000毫升。具体做法:先将洗净去皮的马铃薯切碎成小块,加水1000毫升煮开后再煮半小时,停火。用纱布过滤去掉马铃薯,液体不够1000毫升,加水补足到1000毫升,然后加糖和洋菜。加热使洋菜完全溶化(可用玻棒搅拌)乘热用纱布过滤,然后分装三角瓶内,用15磅的蒸汽高压消毒,时间30分
Kidney bean fusarium wilt is a systemic infection of soil-borne diseases, the general agent control more difficult, we used a new dosage form that is the suspension agent. Suspensions in foreign countries began to study in the 70s. Its advantages apply to pesticides that are poorly soluble in water and organic solvents in general. In recent years, Shenyang Chemical Research Institute has been developed in 1979 to provide us with 38% carbendazim suspension, the cabbage fusarium wilt carried out indoor and external tests, are summarized as follows: First, the test method 1 Determination of the indoor: Yes Using filter paper inhibition zone method. That is, the ordinary medium (PDA for short), formulated as follows: potato 200 grams, 17 grams of agar, sucrose 17 grams, 1000 ml of water. Specific practices: first wash the peeled potato chopped into small pieces, add 1000 ml of water boiled for another half an hour, cease-fire. Filtered with gauze to remove the potato, the liquid is not enough 1000 ml, add water to make up to 1000 ml, then add sugar and agar. Heating to dissolve agar completely (available glass rod stirring) heat gauze filter, and then sub-filled flask, with 15 pounds of steam autoclave, time 30 minutes