炎炎夏日是柑桔生长的关键时期,也是使用农药的高峰期。据我们多年观察,有四种农药如果在高温季节使用在柑桔上,很易发生毒副作用。特提醒广大农友注意。一是波尔多液。该药对柑桔疮痂病、炭疽病、树脂病等防治效果较好,但夏季(7-8月)特别是柑桔锈壁虱的盛发期,波尔多液对其有很强的诱发作用,可使其卵期缩短,幼螨发育加抉,成螨产卵量增加。同时,波尔多液还能杀死柑桔锈壁虱的重要天敌——多毛菌。在失去天敌控制下,诱壁虱发生数量更多,其危害可造成大量的黑皮 Summer is a critical period of citrus growth, but also the peak of the use of pesticides. According to our observation over the years, there are four kinds of pesticides if the use of citrus in the hot season, it is prone to toxic side effects. Special remind the attention of farmers. First, Bordeaux mixture. The drug has good control effect on the citrus scab, anthracnose and resin disease. Bordeaux mixture has strong inducing effect on summer (July-August), especially citrus rust ticks, Egg can shorten the period, the development of young mites plus Jue, adult mites spawn increased. At the same time, Bordeaux mixture can also kill citrus rust ticks important natural enemies - hairy bacteria. In the loss of natural enemy control, the number of induced ticks more, the harm can cause a lot of black