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The first is to add organic fertilizer. This is the basis for the fertility of the soil, and it is the key to the maturity of the new greenhouse. Because organic fertilizer is a complete fertilizer, it can not only supply various nutrients necessary for crop growth, but also play a major role in sustaining high yield of agriculture, activating soil nutrients and improving soil. According to practice, organic fertilizer has the following five characteristics: 1 organic fertilizer is applied to the soil, and microbial decomposition can continuously release various nutrients for cucumber absorption, and can also release carbon dioxide to improve crop carbon nutrition; 2 organic fertilizer During the decomposition process, humic substances, humic acid, amino acids, fulvic acid, etc. are produced, which have a stimulating effect on seed germination and root growth, and promote the biochemical metabolism of crops; 3 organic fertilizer is the main substance for improving soil. During the decomposition process, microorganisms produce secreted enzymes, humus, regulate soil materials and energy conversion, promote the formation of soil aggregate structure, and enhance soil water retention and fertility; 4 organic fertilizer can improve the availability of soil insoluble phosphorus; 5 can increase yield and Improve quality. The organic fertilizer combined with the application of the appropriate fertilizer can coordinate the contradiction between the growth of cucumber and the result, improve the resistance to stress, the color of the melon is straight, and the thorn is full, which can greatly improve the commodity rate. Generally, the mu-fertilized chicken manure is 4-6 square meters, and the cockroach is equipped with 5-8 squares.
The second is to pay attention to the application of biological fertilizer. Generally, the soil plough layer is combined with total potassium and total phosphorus of 180 and 120 kg per mu, but 80-90% of the crops cannot be directly absorbed and utilized. The application of compound growth fertilizer can accelerate the decomposition and transformation of soil organic residues and poorly soluble phosphorus, potassium and other mineral nutrients. Increasing the application of organic fertilizers and biological bacterial fertilizers, and appropriately reducing chemical fertilizers, is an inevitable choice for the production of pollution-free green food. The new soil mulching is especially suitable for multi-application of biological fertilizer. The practice in various places proves that: 7.5-10 kg of high-quality organic biological fertilizer, cucumber plants are strong, sitting more melons, long melons, prolonged picking period, one application, benefiting during the whole growth period The effect is peculiar.
The third is to widely apply decomposed human excrement. Nitrogen is the basic element of crop growth and plays an important role in flower bud differentiation and melon enrichment. According to the survey, the ratio of nitrogen, phosphorus and potassium in the greenhouse of our county is 1:1.7:2.4. For many greenhouses with diammonium phosphate for many years, special attention should be paid to supplementing nitrogen fertilizer. Human feces and urine are completely nutritious and rich in nitrogen. They are widely used in various households. The manure is widely used in the growing season of cucumber, and the effect of watering is the best. Newly built greenhouses can be poured before planting, which is also conducive to soil ripening.
Shaanxi Science and Technology News Author: Liu Zhongxi
Main points of fertilization techniques for cucumber in greenhouse
Due to its excellent environment, strong growth, high yield and high quality, the greenhouse cucumber has high nutritional requirements. The yield of 10,000 kilograms of cucumber fruit per mu requires 2.5-3.0% of soil organic matter, and the available nitrogen, phosphorus and potassium are 27.3, 13.0 and 34.7 kg, respectively. Plus a balanced supply of trace elements. The soil organic matter in our county is generally lacking, only 1.24%, ploughing layer, insufficient available nitrogen and high salt index, which is the main obstacle factor restricting the low yield of cucumber in greenhouses in our county. Increasing fertility, promoting nutrient balance, and improving soil production potential in greenhouses are basic measures for high yield and quality of cucumber. How to increase the fertilizer?
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