The soil environment directly affects the yield and quality of orchard planting. Fertilization adjustment according to soil quality is a scientific way to improve soil conditions, increase orchard production and increase income. However, many fruit farmers still use soil for some soil quality. The method, for example, through the surface plants, through the color of the soil, through the feel of the hands... these "soil methods" can not be said to be completely useless, but they are very inaccurate. Compared with the "soil method", using the soil tester , More accurate. In order to promote the high quality and high yield of orchard, it is indispensable that the soil nutrients support the fruit trees. It is very important to accurately and reasonably allocate the missing elements in the soil at the key nodes of fruit tree management. However, due to the influence of traditional experience cultivation, not only the fertilization effect in the production management process is difficult to guarantee, but also there are still many problems in the orchard soil. To improve the soil condition of the orchard and achieve scientific and rational fertilization, accurate soil nutrient testing is needed. The application of the soil tester provides important technical support for the fruit farmers to improve the soil condition, and helps the orchard managers to master the orchard at any time. The nutrient status of the soil accurately determines the fertilizer status of the orchard, and based on the test results, formulate a scientific fertilization program to promote high quality and high yield of the orchard. In order to promote the quality and efficient development of the orchards in various places, the indispensable part of orchard production is the support of science and technology. The soil tester, the full name of the soil nutrient tester, is a scientific instrument dedicated to the determination of soil nutrient content. The application of this instrument in the orchard can help the majority of fruit farmers to quickly carry out soil nutrient diagnosis in orchards, guide the fruit farmers to improve soil conditions, etc. Solve the contradiction between crop fertilizer and soil fertilization, provide accurate data for soil fertilization, and lay a good soil foundation for the production of fine fruit. At present, soil testers are widely used in agricultural testing centers, agricultural research institutions, fertilizer production, agricultural materials management, agricultural technology services, planting bases and other fields.
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