The shed soil appears red, white and green, and three points can be improved.
The abnormal color of green moss, red frost and white alkali in the greenhouse soil is mainly the performance of soil salinization. Then, how should the vegetable farmers avoid the salinization of the greenhouse soil, thus reducing the appearance of abnormal color of the soil? Soil testing and fertilization on the one hand can make a reasonable fertilization for the creation of good soil fertility, balance the various nutrients related to soil fertility, on the other hand, soil testing can accurately reflect the abundance of soil nutrient content, cultivation of vegetables Before, during and after the period, there is a strong guiding significance of fertilization. Simply put, soil fertilization is the “on-demand supply†of fertilizer. According to the results of soil testing, what is missing in the soil, so that the purpose of fertilization can greatly reduce the amount of fertilizer, thereby reducing the degree of salinization, reducing fertilizer waste and environmental pollution. Reasonable farming operations In the cultivation of facility vegetables, due to the limitation of greenhouse facilities, vegetable farmers generally use small rotary tillers to turn the ground, while most rotary tillers have a soil tillage depth of only about a dozen centimeters, and the upper and lower soil layers are less flipped. In the long run, the plough bottom layer moves up and the tillage layer becomes shallow. The tens of cubic meters of manure used every year and hundreds of kilograms of various chemical fertilizers are mostly concentrated in the surface of 10 cm, which makes the soil surface salt increase year by year, which greatly increases The soil is salinized. After a long time, the soil will have abnormal colors such as red, white and green. Deeply turning the soil can greatly reduce the soil salinization and greatly improve the abnormal color of the surface. Therefore, it is recommended that the vegetable farmers use the summer and autumn rest periods, use the deep gear of the big gear, deep turn the soil, and the original The bottom layer and the soil layer structure are broken, so that the surface soil with heavy salinization and more pathogens is turned to the ground, which has a good effect on improving the resistance of vegetables and improving soil salinization. In addition, long-term unreasonable watering will indirectly lead to salinization of the soil, especially the watering method of flood irrigation, which will destroy the soil aggregate structure, reduce soil permeability, facilitate slab formation, and easily accumulate salt in the soil. The surface layer thus causes salinization. Therefore, it is recommended that the vegetable farmers change the flood irrigation to drip irrigation or sprinkler irrigation, saving labor and water, and avoiding the accumulation of soil salinity on the surface. Pay attention to the application of organic fertilizers It is understood that greenhouse soils with organic matter content above 20g/kg often exhibit good permeability, good fertility, and are not prone to stagnation and salinization. In order to improve the soil organic matter, the usual method is to increase the amount of organic fertilizer. The fresh manure, dry manure, rice husk and other manure commonly used by vegetable farmers are all in the category of organic fertilizer, but in recent years due to sodium ions in manure or The problem of excessive chloride ion is more common. This is because the farm often uses a large amount of caustic soda for disinfection and disease prevention. In addition to the summer and autumn high temperature season, in order to promote the rapid development of chickens and ducks, a large amount of salt is added to the drinking water, resulting in sodium in the manure. The content of ions and chloride ions is high, and the degree of soil salinization will be aggravated after a large amount of application. Therefore, for those old sheds that have been planted for many years or those that have salinization in themselves, it is not recommended to apply manure in large quantities, preferably commercial organic fertilizer. In production, commercial organic fertilizers based on agricultural products such as soybean meal, mochi, soy flour, or fish protein, in addition to increasing soil organic matter, activating soil, can also significantly improve the taste of vegetables; or humic acid, peat, yellow Organic fertilizers such as humic acid, chitin and alginic acid are used as raw materials to break the soil compaction, promote the formation of aggregate structure and improve the soil; use kitchen waste, bone residue and oil residue as raw materials, and ferment and degrade at high temperature. It is combined with organic fertilizers derived from trace elements in the chelated state. It has high organic matter content and long-lasting fertilizer effect, and has good social effects. In addition, during the summer and autumn breaks, green manure crops, such as alfalfa, are planted. When they grow to about 10 cm, they are deep into the soil. In addition to providing organic matter, they can also promote a large number of beneficial microorganisms, inhibit the growth of pathogenic bacteria, and promote soil structure. Improvement. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Full Body Red Light Therapy Mat
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