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1988～1989年我们在本所和依安、甘南两县对向日葵菌核病的化学防治技术进行较全面的研究,探讨了种子消毒和药剂喷洒等处理方法。对14种农药(包括三个混合剂)共27个剂型进行筛选,并研究了适宜的喷药时期与次数。其结果表明:1.药剂拌种与浸种试验一般用于防治向日葵苗期菌核病。但在我省的自然条件下,苗期一般不发生菌核病。试图用种子消毒方法防治向日葵生育后期的菌核病是无效的。2.防治向日葵菌核病最佳的药剂是菌核净、乙烯菌核利和速克灵,稀释倍数为500倍,防
From 1988 to 1989, we conducted a comprehensive study on the chemical control of sun sclerotinia in our institute, Yi’an and Gannan counties, and discussed the treatment methods of seed disinfection and chemical spraying. A total of 27 pesticides (including three mixture) were screened for 27 dosage forms, and studied the appropriate spraying period and frequency. The results showed that: 1. Seed dressing and seed soaking test is generally used to control sunflower seedling sclerotinia. However, in our province under the natural conditions, sclerotinia seedlings generally do not occur. Attempts to use seed disinfection methods to control sclerotinia late sunflower growth is ineffective. 2. The best prevention and treatment of sunflower sclerotinia sclerotiorin bacteria is the net, VRLA and gram Keling, dilution factor of 500 times, anti