Soil is the root of agricultural production, so the importance of soil is self-evident. At present, there are many problems in the cultivated soils in various places, and the soil fertility is relatively significant. From the perspective of sustainable development, the soil fertility restoration plan should be considered at present. Fertile soil is the basic premise to ensure high quality and high yield of crops. Therefore, through the application of soil tester in soil fertility restoration, scientific fertilization and fertilization can be guided, which will help to steadily increase soil fertility, achieve the goal of weight loss and efficiency, and modernize agriculture. Develop a good foundation. Many people may have the doubt that our ancestors did not use chemical fertilizers. Although the yield of crops is relatively low, the soil fertility has not declined. Now, when fertilizers are headed, the output has increased, but the soil power is instead. In the fall, what is the reason? In fact, everything should follow the physical cycle. Fertilizer is very important, but it must have the correct application method. Increasing the amount of chemical fertilizer every year does not guarantee the yield of crops. The timing of fertilization is not good. The fertilization method is not scientific, not only can not fertilize the soil, but also cause acidification of the soil. Deterioration such as salinization. Therefore, scientific fertilization is the guarantee to restore soil fertility and achieve high quality and high yield of crops. The soil tester is mainly used for soil testing. In the process of agricultural production management, the instrument is used for soil testing. According to the test results and the fertilizer characteristics of the crops to be planted, the type, application quantity, application method and application of the fertilizer to be applied are determined. During the period of fertilization, we will make up for the lack of what to do, what is missing, and provide nutrients for the land and crops to achieve nutrient return. This kind of fertilization method is about natural circulation, more scientific and effective, and environmentally friendly. By adopting these soil protection and improvement measures, it not only helps farmers solve the problem of increasing crop yield and quality, but more importantly, restores soil fertility and guarantees. In the future, agriculture will have enough good cultivated land to use. Sheet Metal Processing,Cnc Sheet Metal Bending Parts,Precision Sheet Metal Bending Parts,Sheet Metal Processing Equipment Shenzhen Kairui Precision Technology Co., Ltd. , https://www.kailiseiko.com