Onion is a type of vegetable with a large planting area in the central and southern regions of our province. This vegetable has the characteristics of low investment, high yield, easy management and high efficiency. Early September is the best time to raise onion seedlings. The key points of the seedling raising techniques are as follows. 1. Choose the best species In the production, you can choose purple leather varieties such as Ziyu and Xinhongxing. Generally, the yield per mu is 5,000 kg, and the production capacity per mu for high-yield plots reaches 7,500 kg. Second, prepare the seedbed The seedbed should be a plot with loose soil, fertile, strong water retention, and no onion or garlic vegetables in 2-3 years. Each acre of cultivated field requires a seedbed area of ​​about 35 square meters and a seed amount of 0.5 kg. Before planting, apply fully decomposed farmyard manure and ternary compound fertilizer, then plow, finely prepare the ground, and make a 1.5-2 meter wide border, pour it thoroughly, and wait for it to be planted. 3. Sowing at the right time The sowing date directly affects the size of the seedlings, which ultimately affects the yield of onions. Early sowing and prolonging the growth period of seedlings will cause excessive nutrient area and bolting of seedlings in spring; late sowing, weak seedlings, low cold-tolerance, and dead seedlings in the winter. Therefore, to achieve high yield, the best sowing period should be mastered. In the central and southern regions of our province, the most suitable sowing date is 3 days before and after Bailu. Use dry seeds for sowing and cover with fine soil after sowing, so that the seeds are not visible. After the soil is covered, 33% of the seedbed can be sprayed with 100 ml of weeding per acre to eliminate weeds on the seedbed. 4. Seedling management The main goal of seedling management is to cultivate strong seedlings. After sowing, cover a layer of wheat straw on the border surface, which is good for moisturizing, preventing heat and rain. The soil should be kept moist until the seedlings emerge. When about 60% of the seedlings grow out on the seedling bed, the cover can be removed. Sprinkle water in time according to weather conditions to prevent seedbed compaction, and apply a small amount of urea in combination with watering, and cultivate strong seedlings of suitable age through fertilizer and water regulation. It is necessary to prevent the seedlings from growing too large and causing early bolting, but also to avoid weak growth of the seedlings, which will affect the safe overwintering. When the seedling grows to 4 true leaves, the plant height is 20-25 cm, and the leaf sheath diameter reaches 6-7 mm, it can be planted. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone Greenhouse Wet Pad For Cooling System "Wet curtain - fan" of the vertical ventilation cooling combination is the most economical and effective measures to cool the greenhouse in summer. Greenhouse Wet Pad For Cooling System,Greenhouse Wet Curtain,Greenhouse Cooling Pad,Greenhouse Cooling Paper JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , https://www.greenhousehydroponic.com
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