Due to the time-consuming and time-consuming construction and high investment in the construction of winter greenhouses, they are generally used for many years after completion. The greenhouses are planted with high-yield, high-efficiency and economic crops under man-made conditions. Fertilizers and pesticides are applied in large quantities year after year, causing soil in greenhouses. The pollution is serious. A lot of fertilizers have appeared in many winter greenhouses, but the effect of increasing production is not obvious, and production is reduced. Therefore, a reasonable fertilization technology is one of the effective measures to increase income in the winter greenhouse. Dried White Flower Shiitake Mushroom Organic Dried Shiitake Mushrooms,Using Dried Shiitake Mushrooms,Dried Shiitake Mushrooms Bulk,Whole Foods Dried Shiitake Mushrooms SHANDONG JOIN & SHARE AGRICULTURAL DEVELOPMENT CO., LTD , https://www.joinsharemushroom.com
First, increase organic fertilizer and cultivate fertility. The addition of organic fertilizers can both nutrient plants, improve the physical properties of the soil, and increase soil fertility. It is advisable to mix cooked organic fertilizers (such as chicken manure and pig manure) with non-decomposing crop straws (such as corn stover, wheat straw). According to tests conducted by the Nanjing Institute of Soil Science, Chinese Academy of Sciences, non-decomposing organic matter is obviously more effective in increasing active humus in soil humus than organic humus. In addition, the non-decomposing organic matter has a better effect on increasing the biological activity of the soil than the decomposing organic matter, but the application amount should not be too large, nor too late, and the general application amount per mu is about 1000 kg.
Second, reasonable arrangements for the mouth, to the ground. In the same shed, according to the characteristics of cash crops, it is reasonable to arrange yakou to implement the combination of planting and breeding. The following types are common: (1) Winter and spring foods. Planting vegetables in winter and spring, planting food crops in summer and autumn, and taking grain and vegetable intercropping to avoid the occurrence and harm of vegetable root-knot nematode disease, and at the same time prevent the occurrence and harm of wilt disease and root rot disease of vegetable crop root diseases. (2) Winter and spring dishes, summer and autumn. Planting vegetables in winter and spring, summer and autumn to cover shade nets or grasshoppers, in the shed to develop aquaculture. Not only has the benefit doubled, but the fertility within the shed has also been improved. (3) winter vegetables, summer and autumn fat. Planting vegetables in winter and spring, growing green manure crops in summer and autumn, and deep-turning the soil in autumn, and seeking to plant a green manure crop in 2-3 years.
Third, reasonable deep ploughing. The role of deep ploughing increased the tillage layer, improved the soil structure and ploughability, reduced the soil bulk density, made the soil, fertilizer, and water compatible, promoted the activity of soil microorganisms, and accelerated soil maturation. In winter sheds, deep ploughing time is generally arranged in summer. Winter and spring vegetables are harvested in time and deep ploughing to obtain longer drying time and weathering time to promote soil ripening and nutrient release. Deep plowing should be deepened year by year without disrupting the soil layer.
Fourth, compost as base fertilizer. During the growth and development of vegetables, the nutrients needed are more and more comprehensive. It is best to use a variety of fertilizers for the combination of base fertilizers. For example, different fertilizers with different effects, such as slow-effect and quick-effect, can be mixed with quick-effect nitrogen and organic fertilizers. Make the fertilizer effect smooth and lasting.
Fifth, a reasonable top dressing. According to the external performance during the growth and development of vegetable crops, the quick-acting fertilizers such as chemical fertilizers and decomposed high-quality organic fertilizers can be reasonably followed. In general, the amount of fertilizer needed in the vegetable crops is increased. In addition to applying appropriate amount of nitrogen fertilizer, the use of phosphorus, potassium, and trace elements should also be increased. Since the vegetable crops have been ridged at this time, it is difficult to apply fertilizers in depth, such as winters. Spring cucumber is often used in irrigation at the water inlet of the ground, and stirring constantly. Fertilizer enters the field with water and seeps into the soil.
Sixth, change the irrigation method. Purposefully promote and gradually improve drip irrigation technology. Tests have shown that drip irrigation in winter sheds delays soil compaction, saves water, prevents secondary salinization and secondary gleization, and prevents flooding due to flooding, increasing humidity in the shed, and causing serious damage to the disease. .
7. Spray “free deep plowing†soil conditioners. Without deep ploughing soil conditioners containing high active substances, using water as a medium can effectively break down the hardened soil slabs caused by long-term application of chemical fertilizers, increase soil aggregate structure, conserve water and fertilizer, reduce soil-borne diseases, and promote root growth. 200 grams of water per acre is sprayed on the rows of vegetable crops (to avoid plants, the soil should be moist), 20- to 100-cm deep soil loose and transparent after 20 days, water storage and fertility enhancement, drought resistance, soil microbial increase The root system of the crop is well developed and the depth of the lower bar is deepened.
Eight, foliar dressing. In the late growth stage of vegetable crops, the ability of roots to absorb nutrients is weakened, and foliar dressings can promptly supplement the lack of nutrients from roots. In addition to topdressing nitrogen, phosphorus, potassium and other large elements, you should also follow calcium, boron, magnesium, iron and other trace elements and humic acid.