我们下乡发现,很多果农春季清园都是流于形式,不少果农根本不知道清园的目的,选择用药也是糊里糊涂,具体表现在清园重枝梢、轻枝干,重田间、轻地边,用药浓度偏低。细致清园对虫害的发生能起到杀一顶万的作用,大家都知道各种红白蜘蛛、潜叶蛾、顶梢卷叶蛾、绵蚜等一些虫都是在主杆上的老树皮里越冬,特别是枣树,主杆凹凸不平,害虫尤为严重。 We went to the countryside and found that many fruit growers in spring were all in the meantime. Many fruit farmers simply did not know the purpose of the Qingyuan and chose to use medicine. Ground, drug concentration is low. Detailed Qingyuan pest occurrence can play a role in killing one million, we all know that a variety of red and white spiders, leaf moths, top tip leaf moths, cotton aphids and some insects are on the main pole in the old bark Winter, especially jujube, the main rod uneven, pests are particularly serious.