Soil testing and formula fertilization is balanced fertilization. It is an effective means and technology for improving the efficiency of fertilizer use. It is also a scientific fertilization technology that is currently being vigorously promoted in China. It has gradually been accepted and accepted by farmers, but in some areas, some companies are testing The actual promotion of soil formula fertilization is not satisfactory, leading some farmers to misunderstand the understanding of soil testing formulations. For example, some companies did not allow farmers to enjoy real soil testing and fertilization techniques. Instead, they used soil testing and fertilization as a slogan. Even some companies used farmer's inability to understand soil testing techniques to trick farmers into buying soil. The tester inserts the instrument probe into the ground and prints out a data, recommending the fertilizer they want to sell. There is no scientific formula corresponding to the soil sample measurement results, and even some manufacturers have only one fertilizer type, but also test In the name of soil, a fertilizer is applied to any crop or any soil. Therefore, a considerable number of farmer friends believe that the soil testing formula can solve all problems in the crop growth process, especially some pest and disease problems.
In fact, the soil testing formula is not as magical as some companies promote. It does not cure all diseases. The understanding of soil testing and formula fertilization should be considered from two aspects. On the one hand, soil testing and formula fertilization cannot be simplified. Soil testing and formula fertilization is not a simple technical task. It is a system consisting of a series of theories, methods, technologies, extension models, etc. Soil testing and fertilization are performed through soil testing and based on tests that represent soil fertility. Nutrient values, and fully consider the crop's own needs for each nutrient, follow the principle of crop nutrition to the various nutrients "absence of deficiency, lack of much to make up" to match nutrition, select the appropriate fertilization method according to the formula applied fertilizer. With the changes in planting systems, cultivation methods and fertilization methods, the abundance index of soil nutrients has changed from time to time. After the liberation, China gradually established the soil and fertilizer divisions in cities and counties, and through two national soil surveys, it basically grasped Basic physical and chemical properties of the soil, and according to the Chinese planting structure at the time of fertilization, the method of fertilizing crops was established. In the 1990s, China's planting structure and fertilizer habits have undergone fundamental changes. Farmers have been pursuing maximum yields per unit of land area. The utilization of land has been correspondingly improved. The original soil abundance index and recommended fertilization have been improved. Indicators can no longer meet the needs of modern agricultural production. Therefore, soil testing and formula fertilization is a long-term and should continue to develop projects.
On the other hand, we cannot universalize soil testing and formula fertilization. We should clearly understand that soil testing does not necessarily mean high yields. We all know that there are many limiting factors for crop growth, and mineral nutrients are necessary for crop growth. It is related to moisture and air. Heat, heat, and field management together determine the final crop yield. When guiding farm households to plant land, they should not exaggerate the role of soil testing one-on-one. They should seek truth from facts. In particular, in the current situation of promoting soil testing and formulating fertilization across the country, they should keep calm in their minds. One means of scientific fertilization is necessary.
Soil testing and fertilization technology is a long-term project to benefit the nation and the people. It should fully recognize all aspects of soil testing and fertilization, and rational treatment. Inaccurate knowledge and work will have a negative impact on formula fertilization by soil testing.
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