Winter greenhouse vegetable fertilization technology

When winter arrives, when the author went to the countryside to guide the production of greenhouse vegetables, it was found that many farmers used fertilizers to work overtime, and the amount was large, which caused soil compaction, rotten roots, roots and plants to wilted, which seriously affected the economic benefits of greenhouse vegetables. . According to the author's many years of practical experience, it is recommended that the greenhouse vegetable fertilization should do the following four points:

(1) The combination of organic fertilizer and inorganic fertilizer. Many farmers, whether they are rushing or chasing, are mainly based on chemical fertilizers. Although some fertilizers contain humic acid, inorganic fertilizers are mainly nitrogen fertilizers such as ammonium nitrate and urea. In the short term, vegetables grow well, but they lack long-term effects. Some fertilizers are mainly based on cake fertilizer (hemp seed cake, cotton cake, bean cake) and diammonium phosphate (or ammonium nitrate), and the effect is not good, because the cake fertilizer fermentation takes a certain time.

(2) Combination of topdressing fertilization and flushing fertilization. The fertilizer is mainly composed of multi-component fertilizer, and the combination of topdressing and flushing is adopted to solve the problem of surface root fertilizer requirement. On the other hand, top dressing can activate soil layer, increase root system and alleviate fertilizer efficiency.

(3) The combination of large water and small water. Many farmers, regardless of seedling stage and fruiting stage, apply fertilization with large water, which makes the fertilizer water too large, causing seedling disease, rotten roots and roots. Regardless of biological fertilizer, organic fertilizer, and chemical fertilizer, it is necessary to look at the fertilizer used for the seedlings, the reasonable amount, and the timely cultivation of the loose soil after the fertilizer and water have passed.

(4) Combination of biological fertilizer and chemical fertilizer. Bio-fertilizer contains more than ten kinds of beneficial bacteria, which has the effect of activating soil and regulating nutrients. Combined with inorganic fertilizer (fertilizer), it can relieve fertilizer damage, increase soil organic matter and promote root development.
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