In the greenhouse production process, attention should be paid to fertilizing and improving the soil. For most soils, the fundamental measure for improvement is to increase the amount of organic fertilizer. Organic fertilizers have the following main functions for fertilizing soils: 1, to provide more comprehensive nutrition. Organic manure is a complete fertilizer, contains the nutrients and various beneficial elements needed by crops, and the nutrient ratio is comprehensive. Many nutrients can be directly absorbed and utilized by various plants. Therefore, the more organic fertilizers are applied, the more beneficial the balance of soil nutrient ratios is, and the more beneficial the absorption and utilization of soil nutrients by crops, the greater the increase of certain nutrient elements in the soil due to the application of organic fertilizers, and the destruction of soil nutrients. balance. 2. Organic fertilizers can improve soil structure and form microaggregates. The micro-aggregates have large absorption and storage capacity, release capacity, and conversion ability to themselves and added water and nutrients, thereby improving the physical and chemical properties of the soil, increasing the soil buffering capacity and maintaining the fertilizer and fertilizer supply capacity. 3, organic fertilizer can form humus in the soil. Not only can nutrition be directly applied to the crop, but also humus can be aggregated on the surface of mineral particles in the form of a glue film. The formation of water-soluble and water-insoluble conjugates or chelates with various metal ions can control the effectiveness of trace elements. 4. Organic fertilizer can supply the necessary nutrients to the crop slowly and evenly. Its nutrition is slowly dissolved and it is not easy to produce concentration barriers. Excessive application of chemical fertilizers can easily lead to the formation of salt concentration barriers. 5. Improve soil fertility and water retention. All organic fertilizers have a strong cation substitution ability, can absorb more potassium, ammonium, magnesium, zinc and other nutrients to prevent leaching, improve soil fertility, especially the decomposed organic fertilizer fertility obvious. The greenhouse is a closed or semi-enclosed facility with good airtightness. It can release a large amount of carbon dioxide during the organic fertilizer decomposition process and is not easy to escape, becoming an important source of photosynthesis raw materials for plants. Practice has shown that applying more organic fertilizer not only yields high yield, good quality, but also light disease. Picc Line Cover,Picc Line Sleeve,Picc Line Shower Cover,Picc Line Waterproof Cover Wenzhou Celecare Medical Instruments Co.,Ltd , https://www.wzcelecare.com