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1981年和1982年,我们采用50%硫磺胶量剂(广东江门农药厂提供)、40%多菌灵硫磺混合胶悬剂(广州市化工研究所提供)作防治小麦白粉病试验,以喷石硫合剂和喷清水为对照。试验分预防试验和治疗试验两项。预防试验于4月3日当盆栽麦苗长到一叶一心时喷药,4月4日接种白粉病菌,4月13日调查;治疗试验于4月16日当盆栽麦苗长到一叶一心时接种白粉病菌,4月17日喷药,4月26日调查。两项试验的调查均按病情七级标准进行。试验结果:预防试验的效果以40%多菌灵硫磺胶悬剂500倍液最好,为91.5%,与0.5波美度石硫合剂(90.4%)接近;其次是硫磺胶悬剂的150倍
In 1981 and 1982, we used 50% sulfur gel agent (supplied by Jiangmen Pesticide Factory) and 40% carbendazim sulfur mixed suspension (provided by Guangzhou Chemical Industry Research Institute) for wheat powdery mildew test. Sulfur mixture and spray water as a control. Test points prevention test and treatment test two. Prophylaxis test On April 3, when the potted wheat seedlings were sprayed with one leaf and one heart, the powdery mildew was inoculated on April 4 and investigated on April 13; the treatment trial was on April 16 when the potted wheat seedlings were inoculated when they grew to a leaf Powdery mildew, April 17 spraying, April 26 survey. The investigation of two tests according to the disease level seven standards. Test results: The effect of the preventive test was the best with 500 times of 40% carbendazim sulfur suspending agent, which was 91.5%, close to that of 0.5% mesotrione (90.4%); followed by 150 times of that of sulfur suspending agent