Soil testing and formula fertilization are based on fertilizer field test and soil test. According to the law of crop fertilizer demand, soil fertility and fertilizer effect, and on the basis of rational use of organic fertilizer, the variety, quantity, fertilization period and fertilization method of nitrogen, phosphorus, potassium and medium and trace elements were put forward.
2. Apply more organic fertilizer to improve the level of soil organic matter in cultivated land.
The content of soil organic matter reflects soil fertility. In recent years, the average level of cultivated land organic matter in Tieling City has been improved compared with 1980, but the content of cultivated land soil organic matter in Tieling City is still insufficient, accounting for more than 60% of all cultivated land. This is caused by the predatory use of land by agricultural production for many years, unreasonable fertilization and environmental changes in recent years, which cannot be changed overnight. It is necessary to increase the application of organic fertilizer and gradually improve the level of soil organic matter in cultivated land.
3. Increase the application of formula fertilizer.
Formula fertilizer is a compound fertilizer produced by designated production enterprises according to the formula recommended by the soil and fertilizer department. There are many formula fertilizers on the market, but they are not necessarily suitable for local conditions. Some farmers mix their own fertilizers according to the formula recommended by soil testing, which is very random. Even if they use formula fertilizer, they will change the dosage. Therefore, it is necessary to strengthen the popularization and demonstration of formula fertilizer and gradually increase the application amount of formula fertilizer.
4. Develop organic fertilizer industry and fertilization system.
With the development of animal husbandry, rural organic fertilizer resources are becoming more and more abundant. It is inconvenient to store farmyard manure and it pollutes the rural environment. Specialized organic fertilizer production enterprises need to collect livestock and poultry organic wastes, carry out harmless treatment in the factory, and produce refined commercial organic fertilizers through a series of technological processes such as drying and granulation.
On the one hand, encourage farmers to apply more organic fertilizer; On the other hand, professional service teams for organic fertilizer accumulation and trafficking should be established, equipped with special transportation tools, so that professional service teams can provide fertilizer accumulation and fertilization services for grain farmers, formulate work tasks according to regions, plots and areas, strengthen management, and actively encourage relevant departments, enterprises, farmers and farmers to make full use of existing organic fertilizer resources.