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[目的]明确防治桃树细菌性穿孔病的筛选药剂、应用技术。[方法]采用田间原位试验法,对异菌脲、农用硫酸链霉素、中生菌素、春雷霉素、唑醚·代森联开展田间药效试验与最终残留验证试验。[结果]对桃树细菌性穿孔病,中生菌素30 mg a.i./kg防效最好;春雷霉素,高温下防效较好,可以进一步在生产中加以应用观察;农用硫酸链霉素,受高温影响较大,特别经过8月上中旬的高温后,药效逐渐减退,至目前为止,与空白对照一样,病叶脱落较多,不适合在桃树上推广应用;唑醚·代森联本身药效不高,加上受天气影响较大,不易作为防治桃树细菌性穿孔病的药剂。农药残留未检出。[结论]中生菌素30 mg a.i./kg、春雷霉素25 mg a.i./kg,作为防治桃树细菌性穿孔病的药剂,在病害发生前开始施药,防效比较明显,建议视天气变化,交替使用。
[Objective] The research aimed to clarify the screening and prevention of pest bacterial perforation disease and its application technology. [Method] The field experiment and final residue validation test of iprodione, streptomycin sulfate, mesotrione, kasugamycin, oxazolone and dexamethasone were carried out in the field. [Result] The best antimicrobial activity was 30 mg ai / kg for pest bacterial perforation, and kasugamycin was more effective at high temperature and could be further applied in production. Streptomycin sulfate , Affected by high temperature, especially after the high temperature in mid-August, the efficacy gradually diminished, so far, as with the blank control, diseased leaves shed more, is not suitable for popularization and application in peach trees; Morinaga itself is not high efficacy, coupled with the larger the weather, not as a prevention and treatment of pest bacterial perforation of the agent. Pesticide residues were not detected. [Conclusion] Cytoplasmicin 30 mg ai / kg and kasugamycin 25 mg ai / kg were used as pesticides to prevent and control pest bacterial perforation, and the pesticide application started before the disease occurred. The control effect was obvious. Alternate use.