Comprehensive management of spinach downy mildew

Comprehensive management of spinach downy mildew is to comprehensively manage spinach downy mildew. First, fertilizer and water management to protect spinach like fertile, moist, cold, avoid drought, stagnant water, for fast-growing vegetables. Therefore, it is necessary to provide sufficient fertilizer and water in time during the growth period. From sowing to finishing seedlings, it is necessary to keep the soil moist and ensure full seedlings. Ploughing and weeding in the 3-leaf stage, ventilating and promoting the root; in the 6-7 leaf stage, the spinach should be fertilized with water and the combination of fertilizer and water to promote the exuberant growth of spinach, with 10-15 kg urea per mu, fertilization method, watering after dry application or skillful weather fertilization when it rains; after closing, if you want to top fertilizer, you can apply ammonium bicarbonate water along with the water. If you encounter drought during your growth, you should water and moisturize frequently. In case of continuous rain, drainage should be dredged in time. Second, the main diseases of spinach to control diseases and pests are downy mildew and anthracnose, mainly harming leaves. The main pests are leaf miners and aphids, which should be controlled in time. Prevention and control methods: agricultural prevention and control practice 2-3 years of crop rotation, reasonable close planting, scientific irrigation, clean the countryside, timely removal of disease and disability. Chemical control: the disease can be sprayed with 64% poisonous alum 500 times, 52.5% Yikuangjing 1500 times, 70% methyl topiramate 700 times, and insect pests can be sprayed with 75% Qianke 3000 times, 0.5% Haizheng Sanling 2500 times, 15% vegetables 1500 times 2000 times, 70% Amele 7000 times and so on. Third, timely harvest to be spinach plant growth to 35 cm to 40 cm, can be harvested in time, harvest to remove yellow leaves, withered leaves, diseased leaves, and then sell.