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3月初至4月中旬是防治枣树害虫的有利时期。此期多数害虫逐渐脱离休眠状态,但反应迟钝,抗性较低,适应性差,尚未造成危害,而且枣树还未萌芽,耐药力强,此期防治可大大降低虫口基数,控制害虫发生发展的速度与危害程度,起到事半功倍的效果。 一、修剪。早春进行修剪,既可辟免剪口风干受冻,又可消火大量在枝干上越冬的害虫,如豹纹木蠹蛾幼虫、枣龟甲蜡蚧雌成虫、枣叶壁虱、黄刺蛾的幼虫茧和蓑蛾类害虫的护囊
Early March to mid-April is a favorable period for the control of jujube pests. During this period, most of the pests gradually emerged from dormancy, but they were unresponsive, with low resistance, poor adaptability and no harm yet, and the jujube tree had not germinated yet, and the resistance was strong. During this period, the number of insect pests could be greatly reduced to control the occurrence and development of pests The speed and degree of harm, play a multiplier effect. First, pruning. Pruning in the early spring can not only cut off the mouth to dry and freeze, but also fire a large number of pests on the branches of the winter, such as Leptocamellia prawn larvae, juvenile waxwort female adults, Jujube leaf ticks, yellow thorn moth Larva cocoon and moth pests