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When planting spring cabbage, a small amount of available nitrogen fertilizer is applied with water, 7~10 kg per mu, which has obvious effects on accelerating slow seedling and improving cold resistance. When the plant enters the rosette period after the seedling is slowed down, the root absorption capacity is strengthened, and the watering and topdressing should be carried out at the end of the seedling to promote the ball formation. At this time, each manure can use 2000~3000 kg of human excrement or 15~20 kg of urea. The ball-forming period is the period with the largest growth in the whole growth period. Because the early-maturing variety is short in the ball-forming period and the weight gain is fast in the early stage, the topdressing can be done 1 or 2 times. The mid- and late-maturing varieties have a long ball-forming period, and should be topdressed 2 to 3 times, and each time they can apply 3 to 4 kg of nitrogen per acre.
The seedling stage of autumn cabbage is spent at high temperatures, while the ball-forming period is carried out in a mild and cool climate, so the focus of top dressing should be placed at the end of the rosette and before the mid-ball. Topdressing is generally carried out in 5 times: the first time, when the young roots of the seedlings are planted, the fresh manure and urine are chased once. When the rosette leaves are formed, the second fertilizer is applied. To increase the concentration and dosage, human excrement and nitrogen fertilizer can be used. When the rosette leaves are in the third stage of growth, they can be ditched in the line, and the organic fertilizer and nitrogen and phosphorus fertilizers are mixed, and the soil is sealed after application. In the early and middle stages of the ball, each fertilizer was applied once, and the fertilization was stopped at the end of the ball.
The type and quantity of fertilization are not only related to the yield of cabbage, but also affect its storage effect. Some experiments have shown that when the cabbage is planted in the organic fertilizer area, the middle nitrogen fertilizer area, and the high-fertilizer area, after three months of storage, the commodity rate of the multi-nitrogen area is significantly lower than that of the organic fertilizer area and the medium nitrogen fertilizer area. This is related to the decline in the freshness of the products in the multi-nitrogen fertilizer zone, the high number of heartburn diseases and the large processing loss. Appropriate control of the amount of nitrogen fertilizer, pay attention to the application of organic fertilizer, is conducive to maintaining the good quality of cabbage and prolonging the storage period.
Author: Feng Xue farmers Daily
High-quality and high-yield fertilization management of cabbage
Cabbage vegetables mainly include cabbage, broccoli, broccoli, indigo, Brussels sprouts, etc., which are used for leafy, short-flowered vines, bulbs and lateral buds. Cabbage vegetables are particularly high-calcium crops in vegetables, which require high levels of calcium. When the soil is deficient in calcium or caused by other environmental conditions, it is easy to show symptoms of calcium deficiency, and the edge of the heart leaves is dry, which affects the yield and quality.
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