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桑椹小粒性菌核病是果桑生产中发病率高、危害严重的真菌病害。选择5种常用杀菌剂,采用单一施用或2种药剂交替施用的方法,在前2年发病较严重的桑园于桑树开花期间进行桑椹小粒性菌核病防治的小区试验,单一施用70%甲基硫菌灵可湿性粉剂1 000倍稀释液、50%多菌灵可湿性粉剂800倍稀释液以及二者交替施用对桑椹小粒性菌核病均有较好的防治效果,平均防治效果达到91.48%~99.03%。在桑椹小粒性菌核病的大面积田间防治试验中,采用上述2种药剂交替防治以及药剂防治+地膜覆盖防治的方法,防治效果在80.07%~82.48%,显著优于只用地膜覆盖的防治方法,其中采用药剂防治+地膜覆盖的防治方案,可减少1次施药。试验结果表明:交替施用70%甲基硫菌灵1 000倍稀释液和50%多菌灵800倍稀释液可有效防治桑椹小粒性菌核病,在药剂防治的基础上增加薄膜覆盖可减少总施药量,有利于保证桑果食用的安全性。
Mulberry small sclerotinia is a high incidence of fruit mulberry production, endanger the serious fungal diseases. Five kinds of commonly used fungicides were selected and applied in a single application or alternating with two kinds of medicaments. In the mulberry garden with more severe disease in the first 2 years, the community trials of prevention and treatment of small mulberry sclerotinia mulberry were carried out in the flowering period of mulberry trees. A single application of 70% 1000 times dilution of thiophanate-methyl WP and 800 times dilution of 50% carbendazim wettable powder, and the alternate application of them both had good control effect on small-sized sclerotinia mulberry, the average control effect reached 91.48 % ~ 99.03%. In the large-scale field control experiment of small sclerotinia in mulberry, the method of alternating control of two kinds of medicaments and the prevention and cure of mulching + mulching was adopted, the control effect was 80.07% ~ 82.48%, which was significantly better than the control Method, wherein the use of chemical control + plastic film cover the prevention and treatment programs, can reduce the application of a. The results showed that the alternate application of 70% thiophanate-methyl 1000-fold dilution and 50% carbendazim 800-fold dilution could effectively prevent and cure Sclerotinia sclerotiorum, and the increase of film coverage could reduce the total Dosage, help to ensure the safety of mulberry consumption.