What are the methods for increasing soil organic matter content?
How can the organic matter content of the land be increased? Please describe the methods. You can refer to the following methods to increase the organic matter content of the land: 1. Vigorously promote the return of straw to the field. Returning straw to the field is an important way to increase soil nutrients, raise soil organic matter content, improve soil physical and chemical properties and potassium and phosphorus nutrient conditions, and enhance soil microorganisms...
How can the organic matter content of the land be increased? Please describe the methods
You can refer to the following methods to increase the organic matter content of the land:
1. Vigorously promote the return of straw to the field. Returning straw to the field is an important way to increase soil nutrients, raise soil organic matter content, improve soil physical and chemical properties and potassium and phosphorus nutrient conditions, and enhance soil microbial and enzyme activity.
Especially in recent years, the techniques promoted in various places, such as mulching early rice straw, no-till cultivation of late rice, and straw mulching in wheat fields, rapeseed fields, Chinese milk vetch (Astragalus sinicus) fields, and early crops, not only suit the characteristics of current agricultural production but also serve multiple functions such as using straw to increase fertility, using straw to retain moisture, using straw to regulate temperature, using straw to protect the soil, using straw to suppress weeds, and saving labor in cultivation. They combine the multiple advantages of organic fertilizer, biodegradable plastic mulch, and soil-protecting vegetation. This technique has both the basic characteristics of traditional agriculture and the features of modern agriculture, and it has strong vitality and broad prospects for development.
2. Vigorously develop economic green manure crops. Developing green manure production is an effective way to increase organic nitrogen sources and enrich phosphorus, potassium, and trace elements in the soil. At the same time, green manure is also a link between farming and animal husbandry. The nitrogen resource contained in green manure exists in the form of protein; it can directly provide the protein source needed by humans and livestock and is a high-quality feed for animal husbandry. To develop green manure production, it is necessary to take the path of dual use for grain fertilizer, vegetable fertilizer, and feed fertilizer, and to improve the direct economic benefits of green manure, so that the strong vitality of green manure in agricultural production can be fully demonstrated.
3. Strive to improve the utilization rate of human and livestock manure. The preservation, accumulation, and application of farmyard manure have a long history in China. In the 1960s, the experience summarized by farmers of the "four diligences" (diligent sweeping, diligent bedding, diligent removal, diligent accumulation) and the "eight haves" (cattle have pens, pigs have sties, ash has sheds, manure has pits, people have toilets, chickens and ducks have shelters, every season has manure pits, and fields have green manure) is still not outdated. We must further conscientiously summarize these traditional experiences, gradually improve them, and continue to carry them forward.
4. Vigorously promote commercial organic fertilizers. Since entering the 21st century, refined organic fertilizers and organic-inorganic compound fertilizers have become "rising stars" in the fertilizer industry. Looking ahead to the development trend of fertilizers in this century, apart from being returned directly to farmland or after treatment, organic fertilizers will all be applied to the soil in the form of commercial organic fertilizers and organic-inorganic compound fertilizers. As the demand for organic fertilizers in green food production continues to increase, organic-inorganic compound fertilizers will gradually develop to be mainly based on organic fertilizers, with a small amount of inorganic fertilizer transported to places where organic fertilizer resources are concentrated, to adjust the nitrogen, phosphorus, and potassium ratio in organic fertilizers or increase the available nitrogen in organic fertilizers, so as to give full play to the role of organic fertilizers.
Applying organic fertilizers is to combine traditional agricultural techniques with modern agricultural science and technology; it is a relationship of inheritance and development, and it is also the best way to recycle materials in the process of production and daily life. Only by applying more manure to fertilize the fields and using fertilizer reasonably can the goal of enhancing soil fertility be achieved.
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