The correct use of fertilizer is an important measure to increase food production. However, the utilization rate of fertilizer used by many people is low, and the problem of land pollution is serious. Therefore, how to improve the utilization rate of fertilizer is a problem to be considered. This paper will point out the problem. Specific management measures. First, real-time nitrogen fertilizer management Traditional fertilization requires a large amount of manpower and material resources to collect and process samples. It is also necessary to test different samples and summarize the results into data. These data need to be updated from time to time, and the timeliness is poor. Many crops are affected by nitrogen. There will be many different phenomena. For example, in the absence of nitrogen, the leaves will be chlorotic. In the case of nitrogen, the leaves will be dark green and not easy to age. These different images are used to judge the nitrogen content of the plants and to clarify the nutritional status of the crops. At present, this test method has been widely applied. This test method can diagnose the nutritional status of crops and conduct rational fertilization according to the test results. Non-destructive testing of crops can be carried out in the field, and the nutritional status of crops can be determined by the relationship between chlorophyll content and nitrogen content. This experimental procedure requires the use of a chlorophyll detector, which is more convenient and practical than the traditional inspection method. Second, slow / controlled release fertilization The time when the fertilizer releases nutrients and the actual demand of the crop will produce errors. These errors are the main reason for the low utilization rate of fertilizer. The slow/controlled release fertilization technology controls the water solubility of the fertilizer according to the relevant experimental basis, and the degree of fertilizer release. Time is adjusted to allow the nutrient release of the fertilizer to meet the needs of the crop. The application of this technology can alleviate the current situation of large loss of fertilizer nutrients, protect the land environment, ensure the nutrient absorption of crops, and increase crop yield. The main purpose of the slow/controlled release fertilization technology is to delay the release of fertilizer nutrients, prolong the use efficiency of fertilizers, and regulate the feeding rate of plants. China has been committed to the research of fertilizer components and has made certain achievements. Among them, the new slow/controlled release compound fertilizer developed by China Petrochemical Company and Hybrid Rice Engineering is more suitable for agricultural development in China. The coated slow/controlled release fertilization is mainly divided into inorganic coated fertilizer and organic polymer coated fertilizer. The main production components of inorganic coated fertilizers include sulfur, gypsum, silicate and phosphoric acid. The main production components of organic polymer coated fertilizers are natural polymers, synthetic polymers and semi-synthetic polymers. Third, farmland nutrient precision management technology Precision agriculture is a new type of industrial technology that combines spatial information technology with agricultural technology. The application of precision agriculture technology requires understanding and mastering each agricultural operation unit, and using the data to calculate the required materials, and use this as a basis for field management. Transforming the traditional agricultural structure, establishing a low-consumption, high-efficiency production mode, and realizing the protection of the ecological environment while saving capital investment. Precision agriculture can calculate the interval of fertilization according to the growth of crops and changes in soil quality. Develop a reasonable fertilization program to meet the nutritional needs of crops, create higher economic value, and increase fertilizer utilization. The implementation of precision agriculture technology is mainly divided into four parts: information collection, crop management, data analysis and formulation. At present, precision agriculture has been widely used abroad. Although the development of precision agriculture is not mature enough, its development prospects are unlimited. This is also the main direction of agricultural technology reform in the next few years. 4. Urease inhibitors and nitrification inhibitors The most used type of fertilizer in China is urea. Urea is a kind of nitrogen fertilizer. It accounts for more than half of all agricultural nitrogen fertilizer use in China. However, urea nutrients are easy to volatilize and hydrolyze after entering the soil, causing pollution to the environment. Not conducive to the reuse of land. The use of urease inhibitors can slow down the hydrolysis rate of urea, prolong the use of fertilizers, and reduce land pollution. However, the use of urease inhibitors can only play a role in the hydrolysis of urea nutrients, and cannot solve this problem fundamentally. This requires the joint application of urease inhibitors and nitrification inhibitors. The fusion of the two can achieve full control of urea nutrients, and will not affect crops during use, and maximize fertilizer utilization. At present, the technology is still in the process of production and research and development, and has not been popularized, mainly because of its high production cost and toxins for some characteristic crops. Therefore, urease inhibitors are the main research and development direction in the short term. V. Conclusion Increasing the fertilizer utilization rate plays an important role in promoting the development of China's agricultural economy. In the specific implementation process, we should formulate reasonable solutions according to the geological conditions of different regions. We must increase publicity efforts, actively guide people to implement strategies, and improve people's Living standards, creating economic benefits. 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