A carbon dam construction method to intercept the loss of farmland nutrients

Abstract

The invention relates to a constructing method for carbon dams capable of intercepting nutrient loss of farmland. According to the method, carbon elements in the farmland are firstly absorbed and fixed through carbon dam materials in the carbon dams; then as time goes on, absorption of the carbon material is close to saturation; absorbed nitrogen and phosphorus elements are also released; by now, regeneration of the carbon dam materials is achieved through plants rich in nitrogen and phosphorus; the released nitrogen and phosphorus elements are right needed for growth of the plants, and growth of the plants is facilitated. The carbon dams are arranged at the water drainage position of the farmland, in the longitudinal direction in the farmland and below the soil layer of the farmland. The nitrogen and phosphorus elements in the farmland can be firstly absorbed comprehensively and then released, and later growth of the plants is effectively promoted. Meanwhile, elements in soil can be adjusted for a long time. Use of agricultural fertilizer is reduced, the environment of microorganisms is protected, and the soil structure is protected.

Description

technical field [0001] The invention relates to a carbon dam construction method for intercepting farmland nutrient loss, and belongs to the technical field of agricultural environmental protection. Background technique [0002] Carbon and nitrogen in soil are the core of soil quality, the material basis of soil fertility, and an important source of plant nutrients. Carbon and nitrogen in the soil not only determine the cycle and transformation of nutrients in the soil, but also are the most important "sink" and "source" of these nutrients. The quantity and quality of soil organic carbon affect soil properties, processes, and behavior and play an important role in maintaining soil quality and controlling the bioavailability of nutrients and pollutants. Soil organic carbon plays a key role in the global carbon cycle and climate change. Carbon in soil is an essential nutrient element for plant growth and an important limiting factor for soil productivity. The carbon cycle i...

AI Technical Summary

Problems solved by technology

[0004] Traditional agricultural land does not absorb and fix carbon in the soil. Such farmland is very rich in nutrients after fertilization, which tends to cause excess plant growth. At the same time, plants are prone to malnutrition in the later stage of growth, which affects crop yields, etc.

In addition, when the farmland is drained, a lot of carbon elements are discharged out of the farmland with the water flow, resulting in the loss of nutrients in the farmland, and the farmland needs to be fertilized every year, which is easy to change the nature of the soil, which is not conducive to farmers' planting and wastes money

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