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用新鲜树叶制成的土农药,能有效地防治农作物的病虫害,并有成本低廉、不污染环境的特点。苦楝叶方法一:将0.5千克楝叶捣碎,加水1.5千克,浸泡6个小时,滤去叶渣,制成楝叶液,将其兑水8倍喷洒,可防治螟虫、稻苞虫、稻飞虱、棉叶蝉、棉蚜、菜青虫等,杀虫率可达90％。方法二:将苦楝叶一千克,鲜车前草、菖蒲各0.5千克,切细后加水15千克,用旺火熬至青灰色,得到车前草合剂,将其每千克兑水5千克喷洒,可防治水稻、棉花的多种害虫。柳树叶方法一:将柳树叶捣碎,加水3倍,浸泡1天或用锅煮半小时,滤去叶渣直接喷洒,可杀灭蚜虫、螟虫、菜青虫等,若加水5倍,其浸液可抑制小麦锈病。方法二:将柳树叶、苦楝叶、辣蓼各1.5
Soil pesticides made with fresh leaves can effectively prevent and control pests and diseases of crops and have the characteristics of low cost and no pollution to the environment. Melia leaf method one: 0.5 kg neem leaves mashed, add 1.5 kg of water, soaked for 6 hours, filtered leaf residue, made Neem leaf liquid, spray it 8 times watered against stem borers, rice stems and insects, rice Planthopper, Cotton leafhopper, Cotton aphid, Pieris rapae etc, the insecticidal rate can reach 90%. Method two: Melia leaf one kilogram, fresh plantain, iris each 0.5 kilograms, 15 kilograms of water after shredding, with the fire boil until the green gray, get the plantain mixture, the kilogram per kilogram of water spray 5 kg, Can prevent rice, cotton, a variety of pests. Willow leaf method one: the willow leaves mashed, add water 3 times, soak for 1 day or cook for half an hour, filtered leaf residue spray directly, can kill aphids, stem borers, cabbage caterpillars, etc., if water 5 times, the dip Liquid can inhibit wheat rust. Method two: Willow leaves, neem leaves, Polygonum 1.5 each