What are the main causes of declining soil fertility

1 Reflections on the causes of declining soil fertility

The complexity of the agricultural production structure means it is affected by many conditions. Although agricultural production relies mainly on labor, with natural conditions as a supplement, in the final analysis soil is the fundamental element and the most basic condition required for agricultural production. In order to develop the national economy, better respond to the national call, and carry through to the end the guiding principle of industry as the and agriculture as the foundation, improving soil fertility is of great significance to the development of agricultural production and to increasing yield per unit area.

2 Analysis of countermeasures related to declining soil fertility

2.1 Real-time monitoring and investigation of cultivated land quality and soil fertility

Improving the quality of agricultural production and strengthening the protection of soil fertility carries through the important policy of “sustainable development&rdquo. Relevant departments should attach greater importance and increase publicity efforts, further improve the quality of agricultural production, and reasonably improve the existing technical deficiencies in cultivated land.

Soil fertility is a key factor in the effectiveness of cultivated land, and the primary task of protecting cultivated land is to gain a substantive grasp of every “move” of soil fertility. Because soil surveys have been few and are relatively outdated, most soil data analyses have become “historical data&rdquo, and the land use patterns of many plots have undergone earth-shaking reform and change. This requires real-time investigation of soil so as to gain a more comprehensive grasp of the current basic composition of soil nutrients and lay a foundation for scientific research on soil.

2.2 Focus on promoting straw return technology

Data show that the nitrogen, phosphorus and potassium contained in every 100kg of rice straw can be equivalent to 1kg of superphosphate, 3kg of surface nitrogen, and 4kg of potassium chloride, and the yield increase rate can reach more than 10%. Using straw return technology to increase soil organic matter is one of the more highly recommended effective methods now available. It can not only improve soil quality and optimize soil fertility, but also relatively reduce the application amount of chemical fertilizers. It is an environmentally friendly approach with modern significance.

2.3 Reasonably promote innovative technologies according to the current status of soil capacity

The intake of soil elements in cultivated areas must be clearly identified. Taking Yichun City as an example, although the local soil contains a large amount of potassium fertilizer, potassium fertilizer still cannot be omitted. Its soil condition can be addressed by supplementing potassium fertilizer all at once, combined with the reasonable coordination of other fertilizers, and then applying chemical fertilizer implementation technology, thereby achieving balanced soil nutrients and increased cultivated land yield.

Soil testing and formula fertilization technology is a highly efficient fertilization technology that can balance the nutritional ratio of crops and improve the quality of agricultural products. It can increase the utilization rate of fertilizer by 3%~5%, and relatively reduce unnecessary waste phenomena such as fertilizer loss and volatilization, thereby achieving reductions in pollution and other problems.

Strengthening attention to the analysis of the advantages and disadvantages of agricultural production, clearly organizing the improvement paths for good soil, actively exploring the different cultivation conditions of different soils, and formulating different methods for the actual use of chemical fertilizers and irrigation measures, so as to grasp the formation and development laws of soil, improve soil fertility according to local conditions, and at the same time carry out technological innovation, are also basic tasks that must be completed in the development of agricultural production.

2.4 The necessity of applying organic fertilizer

Organic fertilizer can not only fully supply the nutrient requirements of crops during development and growth, but can also increase the organic matter content of soil, and plays an important role in improving soil structure and enhancing the soil's ability to retain water and fertilizer. Organic fertilizer can be applied in many ways, for example through the harmonious common development of agriculture, animal husbandry and livestock farming, as well as by planting green manure on land extremely poor in organic matter and using straw return technology, all of which can achieve the purpose of increasing application.

2.5 Do a good job in ecological agriculture with soil and water conservation as the focus

Land resources are a type of sustainable development resource, but their sustainability as a resource requires conditions. People should combine actual conditions, formulate detailed plans for the development of ecological agriculture, adopt the most scientific development model, take soil and water conservation as the focus, protect wetlands, prohibit the reclamation of sloping land, reform and adjust the agricultural and livestock structure, create farmland shelterbelts, return farmland to forest and grassland, and scientifically manage seriously problematic land.

The improvement of soil fertility is the foundation of agricultural production development. The improvement of soil fertility, together with excellent crop quality and scientific and reasonable farming habits, is an important factor in agricultural abundance.

Soil can continuously supply nutrients and water to plants, and its own nutrients and regenerative capacity are the basic determining factors of crop production. Regarding the problem of declining soil fertility, on the basis of environmental protection, we should both attach importance to the nutrient composition of the soil itself and continuously improve soil fertility, thereby promoting the sustainable development of agricultural production.