Fertilization of new greenhouse soil
2018-08-09 22:02:24
According to the production experience and scientific experiments in various places, the following points should be noted in the soil fertility of new greenhouses:
I. Adhere to the application of organic fertilizer and inorganic fertilizer The quick-acting nutrients of new greenhouse soil can not meet the demand of various nutrients. In order to increase the yield and quality of vegetables, it is necessary to apply a sufficient amount of fertilizer while adding organic fertilizer. The ratio of organic fertilizer to inorganic fertilizer is generally controlled at 4:6 or 5:5. In the new greenhouse, 300 kg of human excrement will be applied, and 20-35 kg of urea will be applied. This continuous application for 3 years, the general soil porosity, capillary porosity, less than 1-0.25 mm water stability pellets are significantly higher than the same nitrogen fertilizer single fertilizer area. The soil structure retention rate was 27% for single application of fertilizer and 39.2% for organic fertilizer.
2. Rational application of organic fertilizer and special fertilizer According to the test, human manure and fertilizer will be applied in combination with 5:5 or 4:6. After 3 years, the soil organic matter will be increased by 0.23-0.33% than the single fertilizer. And the effective phosphorus content is also higher than the single application of special fertilizer. At the same time, the activities of soil alkaline phosphatase, urease and protease were higher than those of single application fertilizer. This shows that the combination of organic fertilizer and special fertilizer can improve the physical and chemical properties of the soil, enhance soil fertility and increase the activity of enzymes in the soil.
Third, the combination of nitrogen, phosphorus, potassium and three chemical fertilizers Vegetables grow fast, require a large amount of fertilizer, and require a variety of nutrients. Therefore, when applying chemical fertilizers, it is necessary to apply nitrogen, phosphorus and potassium fertilizers together in order to achieve the best yield increase effect. Generally, the newly built greenhouse should be applied with 30 kg of urea per mu, 10 kg of phosphate fertilizer and 20-30 kg of potassium sulfate. It can also be applied with 100 kg of multi-organic organic fertilizer on the basis of applying 3000 kg of high-quality farmyard manure. , fertilizing the soil, the effect of increasing production is better.
I. Adhere to the application of organic fertilizer and inorganic fertilizer The quick-acting nutrients of new greenhouse soil can not meet the demand of various nutrients. In order to increase the yield and quality of vegetables, it is necessary to apply a sufficient amount of fertilizer while adding organic fertilizer. The ratio of organic fertilizer to inorganic fertilizer is generally controlled at 4:6 or 5:5. In the new greenhouse, 300 kg of human excrement will be applied, and 20-35 kg of urea will be applied. This continuous application for 3 years, the general soil porosity, capillary porosity, less than 1-0.25 mm water stability pellets are significantly higher than the same nitrogen fertilizer single fertilizer area. The soil structure retention rate was 27% for single application of fertilizer and 39.2% for organic fertilizer.
2. Rational application of organic fertilizer and special fertilizer According to the test, human manure and fertilizer will be applied in combination with 5:5 or 4:6. After 3 years, the soil organic matter will be increased by 0.23-0.33% than the single fertilizer. And the effective phosphorus content is also higher than the single application of special fertilizer. At the same time, the activities of soil alkaline phosphatase, urease and protease were higher than those of single application fertilizer. This shows that the combination of organic fertilizer and special fertilizer can improve the physical and chemical properties of the soil, enhance soil fertility and increase the activity of enzymes in the soil.
Third, the combination of nitrogen, phosphorus, potassium and three chemical fertilizers Vegetables grow fast, require a large amount of fertilizer, and require a variety of nutrients. Therefore, when applying chemical fertilizers, it is necessary to apply nitrogen, phosphorus and potassium fertilizers together in order to achieve the best yield increase effect. Generally, the newly built greenhouse should be applied with 30 kg of urea per mu, 10 kg of phosphate fertilizer and 20-30 kg of potassium sulfate. It can also be applied with 100 kg of multi-organic organic fertilizer on the basis of applying 3000 kg of high-quality farmyard manure. , fertilizing the soil, the effect of increasing production is better.
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