白及锈病发生特点及药剂防治效果研究  

Occurrence Characteristics and Chemical Control of Bletilla striata Rust

作　　者：刘燕琴[1] 刘杰[1] 刘旭[1] 罗川[1] 刘春雷 李娜[1] 

机构地区：[1]重庆市药物种植研究所,重庆408435

出　　处：《现代农业科技》2017年第22期80-81,84,共3页Modern Agricultural Science and Technology

基　　金：重庆市科委项目(cstc2016shmszx80044)

摘　　要：[目的]白及锈病严重危害其生长,研究锈病发生特点及药剂防治有重要意义。[研究方法]以海拔、土壤、种植年限三因素正交试验,调查研究锈病发生特点;在锈病早期开展药剂筛选试验。[研究结果]海拔200~480 m及800~1 500 m,或砂土、壤土的白及锈病发病率、危害指数较低;海拔500~750 m或黏土的白及发病率、危害指数较高;锈病早期,以锈特(有效含量20%)1 500 g/hm^2防治效果最好,其次为敌锈钠(有效含量20%)1 125 g/hm^2。[结论]在海拔200~480 m、800 m以上,或者砂土、壤土种植白及可以降低锈病发病率、危害指数;白及锈病早期,以锈特(有效含量20%)1 500 g/hm^2可有效控制锈病。[The purpose]Bletilla striata rust is seriously harmful to growth,it is important to study the occurrence and the control of rust.[Researchmethod]Through the three-factor orthogonal test of altitude,soil and planting years,the characteristics of rust were investigated,and drug screening testwas carried out in early rust.[Research result]At the altitude of 200-480 m and 800-1 500 m,or sand and loam conditions,the rust morbidity and riskindex was lower than the condition of the altitude of 500-750 m or clay conditions;In early rust,we found that the Xiute（effective content of 20%,concentration of 1 500 g/hm^2）was the best in the three medications.[Conclusion]In the altitude of 200-480 m or above 800 m,or sand and loamconditions,Bletillastriatarust incidence and hazard index can be reduced;In early rust,we can control the rust with pharmacyXiute Spraying（1 500 g/hm^2）.

关 键 词：白及 锈病 发生特点 药剂防治 

分 类 号：S435.672[农业科学—农业昆虫与害虫防治]