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为了探寻不同发育期朝鲜球坚蚧的有效防治新措施,根据朝鲜球坚蚧不同发育阶段的形态特征和生物学习性,对不同龄期的若虫采取刮皮涂干、树干注射和常规喷雾等措施进行防治。试验结果表明;在施药方法上,刮皮涂干和常规喷雾是最为适用的;在药效方面,在1龄若虫期喷雾施用的几种药剂中醋盐合剂对1龄若虫的喷洒防效达到了90%以上。通过施用脱叶剂处理叶片的方法来防治2龄若虫,试验所设3种浓度的脱叶剂均能间接起到防治作用,其效果均达到了95%以上。在3龄若虫期喷雾施用的几种药剂中95%酒精合剂的喷洒防效达到了90%以上。涂干防治3龄若虫期供试的几种药剂中,20%吡虫啉可溶性液剂1:10的稀释液防效达到了90%以上。
In order to explore new measures of effective prevention and control of Pyrenophora koreanum at different developmental stages, according to the morphological characteristics and biological habits at different developmental stages of Pyrenophora meleagrophea, the nymphs of different age were treated by skin scraping, trunk injection and conventional spraying Control. The results showed that in the application method, the skin scraping dry coating and conventional spray is the most suitable; in efficacy, in the first instar nymph spray of several agents in the spraying of salt mixture on the first instar nymphs spray control Reached more than 90%. Through the application of defoliant leaves treatment methods to control 2 instar nymphs, the test set three kinds of concentrations of defoliants can indirectly play a preventive effect, the effect has reached more than 95%. In the third instar nymph spray application of several agents in 95% alcohol mixture spray control effect reached more than 90%. In the first three instars of nymphs, several dilutions of 20% imidacloprid-soluble solution diluted 1:10 were effective in controlling 90%.