1, base fertilizer. Winter greenhouses Cabbage fertilization is mainly based on high-quality farmyard manure, combined with high-quality farmyard fertilizer and 45% three-component fertilizer, boron and zinc fertilizers as base fertilizer before planting.

2, top dressing. (1) When burying it in the top dressing stage of cabbage, it is also possible to top-dress the same fertilizer as before planting. The vegetable field has not been ridged, and topdressing can be carried out in a buried manner to increase fertilizer efficiency, and should be combined with irrigation. This period can last for about one and a half months. It can generally be carried out twice before and during the Chinese cabbage cabbage to promote vegetative growth. Don't avoid cabbage topdressing nitrogen fertilizer about 20 days before harvest to prevent the accumulation of nitrate and affect the quality of cabbage. (2) Spraying at the nodule stage, combined with pest control, applying 0.5%-1% urea and 0.2% potassium dihydrogen phosphate solution + photosynthetic nutrient film fertilizer to extend leaf functional period and prevent premature aging, thereby improving Chinese cabbage The clean dishes rate.

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