摘要
在广西水稻种植区,水稻橙叶病的发生为害有加重的趋势.据前期调查及田间观察发现,秧田期和大田初期可能是防治水稻橙叶病的关键时期.本研究主要评价了毒氟磷不同剂型、剂量在秧田期和大田初期处理对水稻橙叶病的防控效果.结果显示:毒氟磷悬浮剂和毒氟磷可湿性粉剂对水稻橙叶病有较好的效果,施药量为有效成分含量200~270g/hm2的防效达到77%~90%,显著优于施药量为有效成分含量54g/hm2的对照药剂宁南霉素水剂.本研究为今后田间防控水稻橙叶病提供了技术支撑.
The occurrence of rice orange leaf disease is aggravated in the rice-growing areas of Guangxi. According to preliminary field observations, rice seedling stage and the early stage of growing in field may be the key periods for controlling this disease. In order to provide theoretical basis and technical support for field control of this disease, rice seedlings in the nursery plot and soon after they were transplanted into the field were treated with Dufulin or other pesticides to evaluate their effect on the rice orange leaf disease. The results showed that Dufulin SC and Dufulin WP at 200~270 g a.i./hahad a good effect on rice orange leaf disease, the control effect being as high as 77%~90%, whichwas significantly better than that of the control Ningnanmycin AS at 54 g a.i./ha, whose control effect was 57%.
作者
韦洁玲
高亚楠
李现玲
王顺清
WEI Jie-ling;GAO Ya-nan;LI Xian-ling;WANG Shun-qing(Guangxi Pastoral Biochemical Co., Ltd.,Nanning 530007, China)
出处
《植物医生》
2019年第5期32-35,共4页
Plant Doctor
基金
广西高工效农药及施用技术重点实验室项目(17-259-69)
关键词
毒氟磷
水稻
秧田期及大田期
水稻橙叶病
防效
Dufulin
rice
rice seedling stage and the early stage of growing in field
rice orange leaf disease
control effect
