According to local production experience and scientific experiments, the following aspects should be noted in the soil fertility of new greenhouses:
First, adhere to the application of organic fertilizer and inorganic fertilizer. The soil available nutrients in the new greenhouse can not meet the needs of various nutrient elements for vegetable growth and development. 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. The newly built greenhouse (667 square meters) is applied with 3000 kg of human excrement, and then combined with 20-35 kg of urea. In this way, in general, for 2-3 years of continuous application, the total porosity of the soil, the porosity of the capillary, and the water-stable aggregates less than 1-0.25 mm are significantly higher than the single-fertilizer area with the same amount of nitrogen, and the soil structure remains. The rate of chemical fertilizer was 27%, and that of organic fertilizer was 39.2%.
Second, the rational application of organic fertilizers and special fertilizers. According to experimental tests, it is more suitable to apply manure and fertilizer to 5:5 or 4:6. After 3 years of testing, the soil organic matter increased by 0.23-0.33% than the single-purpose special fertilizer, and the nitrogen and available phosphorus content were also higher than the single-purpose fertilizer. At the same time, the activities of soil alkaline phosphatase, urease and protease were all high in specific fertilizers. This shows that the combination of organic fertilizer and chemical fertilizer can improve the physical and chemical properties of the soil, enhance soil fertility, and increase the activity of enzymes in the soil.
Third, nitrogen, phosphorus, potassium and three chemical fertilizers combined with application. Vegetables grow fast, require a large amount of fertilizer, and require a large 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, new greenhouses are used, 30 kg of urea per acre (667 square meters), 10 kg of three-factor phosphate fertilizer, 20-30 kg of potassium sulfate; or 3,000 kg of high-quality farmyard manure on acre (667 m2). Combined with the application of 100 kg of multi-bio-organic compound fertilizer, the soil is fertilized and the effect is better.
Excerpted from: Hubei Science and Technology News
First, adhere to the application of organic fertilizer and inorganic fertilizer. The soil available nutrients in the new greenhouse can not meet the needs of various nutrient elements for vegetable growth and development. 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. The newly built greenhouse (667 square meters) is applied with 3000 kg of human excrement, and then combined with 20-35 kg of urea. In this way, in general, for 2-3 years of continuous application, the total porosity of the soil, the porosity of the capillary, and the water-stable aggregates less than 1-0.25 mm are significantly higher than the single-fertilizer area with the same amount of nitrogen, and the soil structure remains. The rate of chemical fertilizer was 27%, and that of organic fertilizer was 39.2%.
Second, the rational application of organic fertilizers and special fertilizers. According to experimental tests, it is more suitable to apply manure and fertilizer to 5:5 or 4:6. After 3 years of testing, the soil organic matter increased by 0.23-0.33% than the single-purpose special fertilizer, and the nitrogen and available phosphorus content were also higher than the single-purpose fertilizer. At the same time, the activities of soil alkaline phosphatase, urease and protease were all high in specific fertilizers. This shows that the combination of organic fertilizer and chemical fertilizer can improve the physical and chemical properties of the soil, enhance soil fertility, and increase the activity of enzymes in the soil.
Third, nitrogen, phosphorus, potassium and three chemical fertilizers combined with application. Vegetables grow fast, require a large amount of fertilizer, and require a large 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, new greenhouses are used, 30 kg of urea per acre (667 square meters), 10 kg of three-factor phosphate fertilizer, 20-30 kg of potassium sulfate; or 3,000 kg of high-quality farmyard manure on acre (667 m2). Combined with the application of 100 kg of multi-bio-organic compound fertilizer, the soil is fertilized and the effect is better.
Excerpted from: Hubei Science and Technology News
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】
Steel Angle,High Quality Steel Angle,Steel Angle Details, Zhangjiagang Ever Faith Industry Co., Ltd.
Fenghua Jade Motor Co., Ltd. , http://www.steelstructure-supplier.com