Product Name: metalaxyl usage method: 1. Generally, 25% wp750 times liquid is used to control cucumber downy mildew and blight, cotton blight of eggplant, tomato and pepper, white rust of cruciferous vegetables, etc. it shall be sprayed once every 10-14 days, and the number of times of application shall not exceed 3 times per season. 2. Prevention and treatment of millet white hair disease: 200-300g of 35% seed dressing agent shall be used for every 100kg of seeds. First wet the seeds with 1% water or rice soup, and then mix in the powder. 3. Control of tobacco black stem disease. In the seedbed 2-3 days after sowing, 133 mu of 25% wettable powder per mu was used for soil treatment. Honda was administered seventh days after transplanting, and 58% times wettable powder was added to water for 500 times per mu. 4. When potato leaf blight is first prevented from leaf spot, spray 25% times wettable powder 500 times per mu, spray 1 times every 10-14 days, and do not exceed 3 times.