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1.中药治虫法。(1)藜芦。取1公斤藜芦根,加水20公斤,浸泡1天,用其滤液喷雾,可防治棉铃虫,蚜虫和菜青虫等。(2)山核桃。将山核桃树外壳青皮、树枝、叶等捣碎。1公斤鲜皮加水15～20公斤,浸泡12小时后,滤液喷雾。可防治棉铃虫、蚜虫及地下害虫。 2.巧配驱虫液。(1)食盐、明矾、水比例为1:0.5:50搅匀,棉苗4～5片叶子时,用小型喷雾器将液喷洒全棉株。棉田第一代棉铃虫发生前夕,再用同法喷洒1次,可使棉花全生育期免遭虫害。 (2)煤油、酒、食醋比例为1:0.5:0.5搅匀。当
Chinese medicine pest control method (1) veratridine. Take 1 kg of vetiver root, add water 20 kg, soak for 1 day, with its filtrate spray, can control cotton bollworm, aphids and Pieris rapae and so on. (2) pecan. Hickory shell peel, branches, leaves and other broken. 1 kg fresh skin add water 15 ~ 20 kg, soak for 12 hours, the filtrate spray. Can control cotton bollworm, aphids and underground pests. 2. clever with parasite solution. (1) salt, alum, water ratio of 1: 0.5: 50 mix well, 4 to 5 leaves of cotton seedlings, spray the liquid with a small sprayer cotton plant. On the eve of the first generation of cotton bollworm in cotton fields, spraying the same law once again will prevent the cotton from suffering from pests throughout its growth period. (2) kerosene, wine, vinegar ratio of 1: 0.5: 0.5 stir well. when