In early September, it is the season of onion nursery. The technical introduction is as follows: First, choose the best species Purple violet, purple star, new red star and other purple skin varieties can be used in production. Second, prepare the seedbed Seedbed soil should be selected loose, fertile, strong water retention, 2-3 years have not been planted onion, garlic vegetable plots. Each acre cultivation field requires a seedbed area of ​​about 35 square meters, with a seed amount of 0.5 kg. Before the planting, apply sufficient fertilizer to the farmyard fertilizer. The ternary compound fertilizer is 5kg (calculated according to 35m2), then plowing, fine soil preparation, making a 1.5-2m wide rake, irrigating the water, and sowing. Third, the appropriate sowing Early and late sowing time directly affects the size of the seedlings, which ultimately affects the yield of onions. Early sowing, the seedling growth period is prolonged, will cause the nutrient area to be too large, the seedlings are prone to convulsions in the spring; late sowing, the seedlings are weak, the cold resistance is low, and the dead seedlings are prone to overwintering. Therefore, to achieve high yields, the best sowing time should be mastered. The best sowing date in central and southern regions of our province is suitable for 3 days before and after Bailu. Spread seeds with dry seeds and cover fine soil after sowing. It is advisable to not see seeds. After covering the soil, 33% of the weeds per acre can be used to spray 100 ml of herbicide, except for the treatment of weeds on the seedbed. IV. Seedling management The center of seedling management is to cultivate the strong seedlings as the main goal. After sowing, a layer of wheat straw shall be placed on the surface of the vine to facilitate moisturization, high temperature protection and protection against rain. The soil should be kept moist until it emerges. When about 60% of the seedlings on the seedling bed grow, the covering can be removed. According to weather conditions, timely watering, to prevent the seedbed from hardening, combined with watering topdressing a small amount of urea, through fertilizer and water regulation and cultivation of age seedlings. It is necessary to prevent the seedlings from growing too large, causing early convulsions, but also to avoid the delicate growth of seedlings, affecting safe wintering. When the seedlings grow to four true leaves, plant height 20-25 cm, leaf sheath diameter of 6-7 mm can be planted. Pesticide And Fertilizer Raw Materials We are a specialized manufacturers of Pesticide And Fertilizer Raw Materials from China; We support Pesticide Raw Materials, Derris Root Powder, Pyrethrum Extract, Amino Acid Powder, Abscisic Acid and so on. With advanced R & D and manufacturing in Pesticide And Fertilizer Raw Materials. With high-quality products of Pesticide And Fertilizer Raw Material, we can be a trust suppliers / factory. As a wholesale of Pesticide And Fertilizer Raw Materials, we have the perfect after-sales service and technical support. Look forward to your cooperation! Pesticide Raw Materials,Derris Root Powder,Pyrethrum Extract,Amino Acid Powder,Abscisic Acid Xi'an Quanao Biotech Co., Ltd. , https://www.quanaobiotech.com