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一、前言棉花枯、黄萎病的化学防治,在施药方法上前人已作过土壤处理、拌种、涂茎、灌根等方面试验。由于多种原因防治效果均不够理想,一般防效为50%左右。1986年以来,我们采用颗粒剂根区施药的方法取得了较好的效果,一般防效可达到67.2～74.5%。1988年进一步采用筛选出来的杀菌剂原药经过化学处理并加入适当助剂,研制成“速效治萎灵”新杀菌剂。室内毒力测定,盆栽试验和田间示范结果表明效果良好,在大田防治效果为75.86～91.9%,“速效治萎灵”具有高效、速效,原料易得、工艺流程简单、成本低,适于根区施药等优点。
I. Preface The chemical control of cotton withered and Verticillium wilt disease has been tested by soil treatment, seed dressing, stem coating and root irrigation in the application methods. As a result of a variety of prevention and control effects are not ideal, the general control effect is about 50%. Since 1986, we have achieved good results by using the method of applying granules to the root zone, and the general control effect can reach 67.2-74.5%. 1988 further use of the filter out of the original fungicides after chemical treatment and adding appropriate additives, developed into a “quick cure Ziling” new fungicides. Indoor toxicity test, pot experiment and field demonstration results showed good results. The control effect in the field was 75.86 ~ 91.9%. The effect of “quick cure” was rapid and efficient, the raw materials were easy to obtain, the process was simple, the cost was low, District facilities and other advantages.