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矢尖蚧、糠片蚧等蚧类是柑桔的一大害虫。近年来,我们在化学防治效果较差的情况下,采用土法防治,取得良好效果。现介绍如下: 1.鲜牛尿防治法 冬季,用1公斤鲜牛尿与3公斤水相混,每5天喷一次,连续3次,20天后叶片上介壳基本脱落。春秋两季,1公斤鲜牛尿与5公斤水混合,每5天喷一次,连续3次,20天后蚧类若虫和
Agrimony scale, bran patch Kuwana class is a large pest of citrus. In recent years, we have adopted the prevention and treatment of soil and achieved good results in the case of poor chemical control. Are introduced as follows: 1. Fresh cow urine prevention and control method In winter, with 1 kg of fresh cow urine mixed with 3 kg of water, spray once every 5 days for 3 consecutive days, 20 days after the basic shell on the leaves off. Spring and autumn, 1 kg of fresh cow urine mixed with 5 kg of water, spray once every 5 days, 3 times in a row, 20 days after the scale class nymphs and