Apply fertilizer to the soil correctly and reasonably to increase the productivity of greenhouse

　　1. Increasing the application of high-quality organic fertilizer is the basis for improving soil fertility

　　After organic fertilizer is applied to the soil, it can effectively improve the physical and chemical properties and biological characteristics of the soil, and mature the soil. Enhance the soil's fertility retention and fertilization capacity and buffer capacity, create good soil conditions for crop growth, and increase crop yields. Organic fertilizer is rich in organic matter and various trace elements. As a complete fertilizer, in greenhouse vegetable production, it can not only supply various nutrients necessary for the growth of crops, but also continue to produce high yields for agriculture, activate soil nutrients, and improve Soil has an important role. Practice has proved that organic fertilizer has the following five characteristics: When organic fertilizer is applied to the soil, it is decomposed by microorganisms to continuously release various nutrients for plants to absorb, and also release carbon dioxide to improve crop carbon nutrition; organic fertilizer is in the process of decomposition , Produces humus, humic acid, amino acid, fulvic acid, etc., which stimulates seed germination and root growth, and promotes crop growth and metabolism; organic fertilizer is the main substance for improving soil. During the decomposition process, microorganisms produce secretion enzymes and humus, regulate soil material and energy conversion, promote the formation of soil aggregate structure, and enhance soil water and fertilizer retention capacity; organic fertilizer can increase the activity of soil insoluble phosphorus; increase yield and improve quality. The combination of appropriate amount of organic fertilizers can balance the contradiction between vegetable growth and results, improve crop resistance, and greatly increase the product commodity rate. After the organic fertilizer is decomposed, it provides energy and nutrients for soil microorganisms, promotes microbial activities, accelerates the decomposition of organic matter, and produces active substances that can promote crop growth and improve the quality of agricultural products.

　　2. Pay attention to the application of biological bacterial fertilizer

　　In general, the total potassium and total phosphorus per mu in the general soil plough layer should reach 180kg and 120kg or more, but 80% ~90% cannot be directly absorbed and utilized by crops. The application of compound biological bacterial fertilizer can accelerate the decomposition and transformation of soil organic residues and insoluble phosphorus, potassium and other mineral nutrients. Increasing application of biological bacterial fertilizers, especially better biological bacterial fertilizers, and appropriately reducing chemical fertilizers can not only improve soil compaction, but also an inevitable choice for the production of pollution-free green food. The maturation of the soil in the newly built greenhouse especially requires more application of biological bacterial fertilizer. Practice has proved that the application of high-quality organic biological bacterial fertilizer at a rate of 7.5-10 kg per mu can provide strong vegetable crops, more fruit-setting, large melons, and prolonged picking periods. The whole growth period will benefit from one application and the effect is significant.

　　3. Extensive application of decomposed organic fertilizer

　　Nitrogen is the basic element of crop growth and plays an important role in flower bud differentiation and fruit expansion. Organic fertilizer has complete nutrients and rich nitrogen, and every household has it. During the vegetable growth period, it should be widely used with decomposed human feces, especially combined with watering and flushing. New greenhouse can be watered before planting, which is conducive to the maturation of raw soil.

　　4. Soil tillage

　　Through deep digging and drying, the soil is turned, loosened, crushed, and leveled to deepen the plough layer and improve the soil structure , Regulate the existence of water, fertilizer, gas, heat and other elements in the soil, make the soil plow layer loose, increase the total pores of the soil, thereby increasing the aeration and water capacity of the soil. Through farming, the soil layer that has gradually become solid and unstructured due to mechanical pressure is turned down, and the soil with a better structure in the lower layer is turned up to restore the soil plow layer and aggregate structure.