Add organic fertilizer
Organic fertilizers contain a variety of nutrients. In addition to a large number of elements such as nitrogen, phosphorus and potassium, they also contain the medium and trace elements needed for many crops, providing the crop with all the necessary nutrients, especially micronutrients. Can reduce or replace part of the fertilizer. Organic fertilizer also contains organic matter and humus, which can improve soil structure, coordinate the relationship between soil water, fertilizer, gas and heat, enhance soil permeability and water and fertilizer supply, and promote crop growth.
Organic fertilizer can be built by stacking, usually using wastes such as human and animal waste, crop straw, etc., and commercial organic fertilizer can also be used.
Do a good job of straw returning
Crop straw can provide abundant organic matter and certain nutrients of large and medium trace elements for the soil. It is an important measure to improve soil fertility, improve soil structure and promote sustainable development of agriculture.
Straw smashing can be used to directly return the field, fast-fertilizing and returning to the field, and livestock to return to the field. It is forbidden to burn straw in open air, so that the straw can be taken from the field and used in the field, thereby reducing the use of chemical fertilizer and reducing agricultural non-point source pollution. Soil pollution and improve the quality of agricultural products.
Formulated fertilization
Formulated fertilization is based on soil testing and fertilizer field trials. According to crop fertilizer requirements, soil fertility performance and fertilizer effect, nitrogen, phosphorus, potassium and medium and trace elements are applied on the basis of rational application of organic fertilizer. Quantity and method.
Targeted to supplement the nutrients needed for crops, what elements are needed to supplement crops, how much to supplement, to achieve a balanced supply of nutrients, to meet the needs of crops, to improve fertilizer utilization, reduce fertilizer use, and improve crops Production, improve the quality of agricultural products, and increase the income.
Improve fertilization
The soil texture is different and the fertilization method used is different. Generally, the clay and loamy soil should be based on the combination of base fertilizer and base fertilizer. Sandy soils should be applied in small amounts multiple times. Regardless of the nature of the soil, it is strictly forbidden to apply fertilizer on the surface, and to apply the fertilizer to the surface and apply it as a mechanical deep application. The application depth of nitrogen fertilizer is 8-10 cm. Phosphorus, potash fertilizer and micro-fertilizer should be applied in full-layer fertilization, that is, the fertilizer should be used in places where crop roots can be contacted, so as to facilitate the absorption and utilization of crops.
The implementation of water and fertilizer integration to water and fertilizer, the supply of water is closely related to the absorption of crop nutrients, improper use of water not only causes loss of nutrients, but also affects the growth of crops. Appropriate amount of timely irrigation can promote the absorption of fertilizer and improve the utilization of fertilizer.
Grasp the best fertilization time
The nutrient critical period and maximum efficiency period of the crop are two key periods for the crop to absorb nutrients. These two periods should be grasped to ensure the maximum efficiency of the fertilizer and the nutrient demand of the crop. In general, the nutrient critical period of phosphorus is in the early stage of fertility, and nitrogen is in the period of vegetative growth to reproductive growth.
According to the growth period of crops and the law of fertilizer demand, the fertilizer is used in the most sensitive period of crop fertilizer. According to the fertility characteristics of crops, the principles of light, medium and heavy supplements are mastered.
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