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近年来,我国一些枣产区枣象(虫甲)猖獗成灾。由于此虫发生期长,抗药性强,一般药剂防治效果不佳。以往枣农多采用干击法防治,费工费时,伤枝落花,影响产量,一旦防治不及时,往往造成叶、花皆光,红枣绝收,损失很大。为探索简便易行,有效的防治方法,我们1981—1983年进行了多种农药的防治试验,从中筛选出防治枣象(虫甲)较为理想的药剂——50%辛硫磷。一、新郑、新河枣区象(虫甲)种类通过调查,河南新郑、河北新河两个枣产
In recent years, some dates in China jujube (insect) rampant disaster. Because of the long period of this worm, drug resistance, the general effect of poor control agent. In the past, jujube farmers often used the method of dry-stemming prevention and control, which took a lot of time and effort to make the crop fall and hurt the yield. Once the prevention and treatment were not implemented in time, the leaves and flowers were all too light. In order to explore simple and effective control methods, we conducted a variety of pesticide control experiments in 1981-1983, from which we screened 50% phoxim, an ideal agent for controlling jujube (snail). First, Xinzheng, New River jujube district (insect) species through the investigation, Xinzheng, Henan, Hebei, two new jujube production