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Advantages of soil nutrient analyzer in soil testing and formula fertilization
In recent years, soil testing and fertilizer testing have been carried out in order to achieve balanced fertilization. A series of scientific fertilization techniques such as special fertilizer configuration and fertilization technical guidance. This is the so-called soil testing and formula fertilization technology. This technology is not a simple technical work. It is a system consisting of a series of theories, methods, techniques and promotion models. . The agricultural technology promotion system should be responsible for the core of soil testing, formula and fertilization guidance, and establish a technology promotion platform; the soil testing and fertilizer testing station, fertilizer production enterprises, fertilizer sellers, etc. should do a good job in formulating fertilizers and supply services, and establish good production. And marketing mechanism; research and teaching units should focus on solving restrictive technologies or problems, and constantly improve and improve soil testing and formula fertilization technology.
The soil nutrient speedometer mainly refers to a portable instrument that can be brought to the field and quickly test soil nutrients. It is a good tool to publicize the soil testing and fertilization to improve the farmers' awareness of soil fertilization; but generally it is not scientific. Accurately guide farmers to fertilize. First, the soil nutrient speedometer is operated in the field, and the external environmental conditions are difficult to control. The accuracy and accuracy of the test results of soil nutrients are difficult to guarantee. Second, the soil nutrient test results are a relative value. It is necessary to have a matching fertilizer field plot test to establish a fertilization recommendation index system. At present, most soil nutrient speedometers have not established a perfect recommended fertilization index. Third, when there are only 1-2 soil samples, the soil nutrient speedometer can reflect “fastâ€; on the contrary, when the sample quantity reaches a certain batch (more than 3), compared with the routine test of the laboratory, “test†It became a slow test. Therefore, conventional soil nutrient testing is the best and most effective means of understanding soil when conducting large-scale soil testing and fertilization.
Field experiment is the fundamental way to obtain the best fertilization amount, fertilization period and fertilization method for various crops. It is also the basic link for screening and verifying soil nutrient testing technology and establishing fertilization index system. Through field trials, master the optimal fertilization amount, base and topdressing distribution ratio, fertilization period and fertilization method for each cropping unit; find out the basic parameters such as soil nutrient correction coefficient, soil fertilization amount, crop fertilizer requirement and fertilizer utilization rate; Construct a crop fertilization model to provide a basis for fertilization zones and fertilizer formulations.
Soil nutrient speedometer soil testing is one of the important basis for formulating fertilizer formula. In the contemporary crop industry structure is constantly changing, the emergence of high-yielding crop varieties, soil nutrient changes are also increasingly obvious, only by carrying out soil nutrient tests such as nitrogen, phosphorus and potassium, can further understand the status of soil fertility.