I. Variety selection There are many early-ripening cabbage cabbage varieties currently used in production. Among them, cabbage cabbage varieties No. 12 early cabbage cabbage, Youqing Sijiu (31 cabbage cabbage) and Dongguan 45 days are resistant to heat and resistance. Stronger, higher yield and better quality. Second, the selection of land preparation and early maturing oil cabbage hearts are more resistant to fertilizers. In production, fertile, loose, organic-rich loam or sandy loam should be selected for planting. Vegetables are thicker, higher yield and better quality. Before sowing, plough the ridges, apply sufficient fertilizer, and prepare the ground so that the surface of the turtle is dorsal, without large pores or cracks. Generally, the width of the ridge is 1.5-1.7 meters, and the height is 20-30 cm. 3. Timely sowing of early ripening oil cabbage heart in our province. The suitable sowing period is from May to October, and the * suitable sowing period is from August to October. Live broadcast is mostly used in hot and rainy seasons. The live seeding amount is 400-500 grams per acre. Seedlings are transplanted for 15-18 days, and the seedlings have 3-4 leaves. 4. Cultivation management 1. Covering the shading net After sowing, it is covered with cool gauze to keep moisture, prevent high temperature burns, rainstorm impact, and soil compaction, so as to facilitate emergence, Qi Miao and whole seedlings. After emergence, the shading net is quickly opened to prevent excessive growth. For example, in the hot and rainy season, in order to avoid the adverse effects of adverse weather on the growth of cabbage, you can lift the shading net after emergence to raise it by 80-100 cm, and set up a small flat on the hoe to cover the heat and rain. Covering for 10-15 days is appropriate. If you use seedling transplantation, you can cover for 5-7 days after transplanting. Do not cover it during the full growth period. The silver-gray shade net with a shading rate of 45% is better when covered. 2. Thinning seedlings in time. When the true leaves of the seedlings are unfolded, the dense, weak or diseased seedlings should be thinned out in time. Thinning and fixed seedlings should be carried out during the three-leaf stage. The seedling distance is about 13 cm. The weak and inferior plants that were too dense during the latter time were conducive to ventilation and light transmission, and the vegetables were thick and strong, and the commodity rate and the quality of vegetables were improved. 3. Fertilizer and water management: The early growth period of early-growing oil cabbage is short, and the growth rate is fast. It is advisable to apply sufficient base fertilizer. Generally, 1500-2000 kg of cooked pig manure or 750 kg of chicken manure per acre, and 20-30 kg of compound fertilizer are fully mixed with the soil. Topdressing in time during the growth period. In the early stage of topdressing, fast-acting nitrogen fertilizer is the main factor, and the combined application of phosphorus and potassium fertilizer in the middle and late stages is conducive to improving the yield and quality of rape. Generally, the first true leaf can be watered with thin dung water once or 3-5 kg ​​of urea per acre to raise seedlings; combined with thinning stage for topdressing, 20% of human dung urine 1000-1500 kg or urea can be used per acre Mixed application of kg with 10 kg of compound fertilizer; 30 to 40% of human feces and urine 1000-1500 kg or 10 kg of urea mixed with 20 kg of compound fertilizer once every 5-7 days; Fertilization should be stopped during harvesting, and topdressing should be performed about 3-4 times during the whole growth period. Avoid fertilizing on flower buds during fertilization to cause bad buds. Pay attention to the water and keep the crotch surface moist. 4. The main pest prevention and cure diseases are anthracnose and soft rot, etc., mainly prevention. Anthrax is a high-temperature and high-humidity disease. The pathogen invades mainly from wounds and spreads through rain and insects. It occurs more frequently from April to September every year. In recent years, it has been more common and has a greater impact on the production of cabbage. In production, attention should be paid to selecting high-drain land with good irrigation and rotation, crop rotation, cleaning the countryside, removing diseased plant debris, and strengthening management. Leaf spots can be used in the early stages of disease 1000 times the net, 1000-1500 times the Baobaogong, 800 times the 50% carbendazim wettable powder, 600-800 times the 75% tobbutin wettable powder; soft rot can be used 70% dikezon wettable powder 1000 times, Cai Fengning was sprayed 500 times and 72% agricultural streptomycin was sprayed 3000-4000 times. Insect pests are mainly yellow curly beetles, diamondback moth, cabbage worm, Spodoptera litura, etc. Attention should be paid to the prevention and control of Puccinia striiformis in the seedling stage, and the control of Plutella xylostella, Pieris rapae and Spodoptera litura in the middle and late stages. Fifth, timely harvesting When the height of the vegetables is equal to or close to the plant leaves (commonly known as Qikouhua), it should be harvested in time. Proper harvesting is helpful to improve the yield and quality of rape. Disclaimer: Some articles on this website are transferred from the Internet. 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High-yield cultivation techniques of cabbage
It is a vegetable variety cultivated in our province *, and it is also the main vegetable variety exported to Hong Kong, Macao and Southeast Asian countries. In recent years, the heart color of early-ripening green cabbage is better than that of yellow-leaf green cabbage, with good color and luster, short petioles, good product characteristics, good quality, and high price. Therefore, the cultivation area in production has been increasing, and it has become a large vegetable market and The main variety planted by vegetable farmers in the suburbs. The high-yield cultivation techniques of Youqing Zaocaixin are introduced as follows: