水稻白叶枯病常态化预防控制技术应用

Application of normalized prevention and control technology of rice bacterial leaf blight

水稻白叶枯病是水稻生产过程中重要的病害,尽管对该病害的防治做了大量工作,但2015年以来,该病害又有上升趋势,特别是2019年后,衢江区水稻白叶枯病发生面积呈多点式、暴发式增长,尤其是单季晚稻与连作晚稻,对该区水稻生产构成严重威胁。借鉴“中医治未病”理论,探索采用“3+X”模式防控水稻白叶枯病。结果表明,与常规防治方法相比,在水稻种植关键环节,用20%噻唑锌提早进行预防处理,不仅能有效降低病害的发生程度,延缓田间病害扩展速度,对水稻植株生长功能也有一定的改善作用,作物安全性好。利用此模式防控效果达到85%以上,产量比常规防治区增加10%以上。

Rice bacterial leaf blight is an important disease in the process of rice production,though we have done a lot of work in the prevention and control of this disease,but since 2015,the disease has been on the rise,especially after 2019,the occurrence area of rice bacterial leaf blight in Qujiang District has shown a multi-point and explosive growth,especially for single-season late rice and continuous cropping late rice,which poses a serious threat to rice production in our region.In this paper,we drew on the theory of“traditional Chinese medicine to treat diseases”and explored the use of the“3+X”model to prevent and control rice bacterial leaf blight.The results showed that compared with the conventional control methods,the early preventive treatment with 20%thiazolezinc in the key link of rice planting could not only effectively reduce the occurrence of diseases,delay the expansion rate of diseases in the field,but also improve the growth function of rice plants,and the crop safety was good.The prevention and control effect of this model reached more than 85%,and the yield increased by more than 10%compared with the conventional control area.