The fertilization time and method of cabbage, the main vegetable in China**.
Cabbage is one of the most important vegetables in China, with a wide planting area, high yield, crisp and refreshing taste, rich nutrition, and is deeply loved by people. Fertilization is a very important part of the cabbage planting process. Reasonable fertilization time and method are the key to ensure high quality and high yield of cabbage. The following details the fertilization time and method of cabbage. i.Fertilization time Cabbage has a short growth cycle and generally needs to be fertilized three times. The first time is at the seedling stage, the second time is at the rosette stage, and the third time is at the budding stage.
1) Fertilization at the seedling stage At the seedling stage of cabbage, in order to promote the growth and development of seedlings, sufficient nitrogen and phosphorus fertilizers must be applied. At the same time, in order to prevent the emergence of pests and diseases at the seedling stage, it is also necessary to apply sufficient amounts of potassium fertilizer and trace elements. In general, the amount of fertilizer applied at the seedling stage should account for about 30% of the entire growth period. 2.Fertilization at the rosette stage During the rosette stage of cabbage, adequate amounts of nitrogen and phosphorus fertilizers must be applied to promote leaf growth and photosynthesis. At the same time, in order to prevent leaf cracking and disease, it is also necessary to apply an appropriate amount of potassium fertilizer and trace elements. In general, the amount of fertilization applied during the rosette stage should account for about 20% of the entire growing season. 3 Fertilization during flowering During the flowering period of cabbage, it is necessary to apply a large amount of nitrogen and phosphorus fertilizers to promote rapid growth and fullness of stems and leaves. At the same time, in order to prevent leaf cracking and disease, it is also necessary to apply sufficient amounts of potassium and trace element fertilizers. In general, the amount of fertilizer applied during the budding period should account for about 50% of the entire growing period.
Second, fertilization method 1Basal fertilizer Before planting cabbage, organic fertilizer should be applied to the soil as a basal fertilizer. The amount of basal fertilizer should be determined according to the fertility and soil quality of the soil, and about 3000-4000 kg of organic fertilizer should be applied per mu. At the same time, an appropriate amount of nitrogen fertilizer and phosphate fertilizer should be added to ensure that the soil nutrients are sufficient. 2.Fertilization During the growth of cabbage, it is necessary to monitor fertilization in a timely manner according to its growth. Fertilizers can be applied in strips, holes or sprays. The amount of fertilizer should be determined according to soil fertility and cabbage growth, generally 15-20 kg of urea, 50-60 kg of superphosphate, and 15-20 kg of potassium sulfate per mu. At the same time, it is necessary to pay attention to the amount of fertilizer and the proportion of fertilizer to prevent excessive fertilization from causing soil salinization or environmental pollution. 3.Foliar fertilization Foliar fertilization can be used to supplement nutrients in addition to soil fertilization. Foliar fertilization can be sprayed with moderate amounts of potassium dihydrogen phosphate, urea, calcium sulfate, and other fertilizers formulated to the right concentration. The number and concentration of sprays should be based on the growth of the cabbage and the nutrient status of the soil to avoid problems such as leaf damage or nutrient waste caused by over-fertilization.
In conclusion, to ensure the high yield and quality of cabbage, it is necessary to fertilize at the right time and adopt appropriate fertilization methods. At the same time, it is also necessary to pay attention to the amount and proportion of fertilizer to avoid excessive fertilization to cause negative effects on the soil and the environment. Only in this way can we ensure healthy growth, excellent quality and stable yield of cabbage.