摘要
[目的]明确桃枝枯病的防治适期。[方法]研究在早春花前2个不同时间喷施杀菌剂对桃枝枯病的田间防治效果。[结果]3月4日（45%咪鲜胺水乳剂900倍稀释液＋50%多菌灵可湿性粉剂500倍稀释液）和3月19日（10%苯醚甲环唑水分散粒剂500倍稀释液＋50%多菌灵可湿性粉剂500倍稀释液）连续2次喷施杀菌剂的防治效果最好,药后20 d对“湖景蜜露”和“柳条白凤”病枝的防效分别为73.8%和63.2%,药后50 d的防效分别为68.3%和62.9%;3月4日和3月19日仅1次防治有一定的效果,药后50 d防效为23.8%~39.7%。[结论]早春花前防治,特别是2次用药能有效控制桃枝枯病。
[ Objective ] The aim of this paper was to understand chemical control time against shoot blight of peach. [ Method ] Control efficacy of spraying fungicides on peach shoot blight at two different time before flowering period was tested in field trials. [Result] The spraying 45% Prochloraz EW （900-fold dilution） and 50% Carbendazim WP （500-fold dilution） on March 4, and 10% Difenoconazole WDG （500-fold dilu- tion） and 50% Carbendazim WP （500-fold dilution） on March 19 was the best against diseased twigs, with the control effects of 73.8% and 63.2% for peach variety ＂Hujingmilu＂ and ＂Liutiaobaifeng＂ 20 days after the spray two times, respectively, and with the effects of 68.3% and 62.9% 50 days after the spray. Furthermore, the control effects of fungicides only on March 4 and March 19 were 23.8% -39.7% 50 days after the spray. [ Conclusion] The study indicated that successive spraying of fungicides two times in early spring before flowering period has significant control effects against peach shoot blight in field.
出处
《安徽农业科学》
CAS
2015年第32期122-122,169,共2页
Journal of Anhui Agricultural Sciences
基金
现代农业产业技术体系建设专项(CARS-31-2-02)
江苏省农业科技自主创新资金项目[CX(14)2015
CX(15)1020]
江苏省无锡市农业科技支撑项目(CLE01N1410)
关键词
桃枝枯病
桃拟茎点霉
杀菌剂
防治时间
田间防效
Peach shoot blight
Phomopsis amygdali
Fungicides
Chemical control time
Control efficacy in the field
