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用化学方法防治蚜虫效果固然好,但污染环境、伤害天敌,有许多弊病。用“土”方法防治既节省农药,又不伤害天敌,还能收到良好的效果。1.牛尿防治:①用90%的晶体敌百虫30克加少量水溶解后,混入1000克腐熟牛尿中,然后兑水50倍进行喷雾。②用腐熟牛尿1000克加生石灰50克、硫磺粉50克,用少量水调成糊状,熬制15分钟后兑水60倍喷雾。③腐
Chemical methods to control aphid’s effect is good, but polluting the environment, harm natural enemies, there are many drawbacks. With the “soil” method of prevention and control not only save pesticides, but also do not hurt natural enemies, but also receive good results. 1. Cow urine control: ① 90% crystal trichlorfon 30 g plus a small amount of water dissolved, mixed with 1000 grams of cooked cow urine, and then watered 50 times for spraying. ② Corrosive cow urine 1000 grams plus lime 50 grams, 50 grams of sulfur powder, with a small amount of water into a paste, boiled for 15 minutes after watered 60 times spray. ③ rot