Inorganic oxides are compounds composed of metallic and nonmetallic elements, of which oxygen is one of the main elements. They are found widely in nature, including minerals, rocks and soil. Oxide,Aluminum Oxide,Iron Oxide,Copper Oxide Wuxi Volksky New Materials Co.,Ltd. , https://www.volkskychem.com
Soil testing and formula fertilization is not just a result of laboratory analysis, but the simple process of “trimming†a prescription can be achieved. Fertilizer field trials of different crops are the most direct and effective methods for understanding the effects of fertilizer application, crop growth status, and nutrient absorption processes and results. They are the basis for carrying out soil testing and formulating fertilization and are the primary basis for formulating crop fertilization plans and proposals. It is the premise of establishing crop fertilization zoning, and it is also the basis for researching, screening and evaluating soil nutrient testing methods and establishing different test methods fertilization index systems. Therefore, field trials are the basis for soil testing and formula fertilization and must be highly valued.
The soil nutrient tester mainly refers to portable instruments that can be brought to the field to quickly test soil nutrients. It is a good tool for propagandizing soil testing, formulating fertilization, and improving farmers' awareness of soil testing and fertilization; but it is generally not scientific and accurate. Guide farmers to fertilize. The first is that the soil nutrient speed meter is operated in the field, and the external environmental conditions are difficult to control. The accuracy and accuracy of soil nutrient test results are difficult to guarantee. Second, the soil nutrient test results are a relative value. It is necessary to have matching fertilizer field plots to establish a recommended fertility indicator system. At present, most soil nutrient speed testers have not established a sound recommendation for fertilization.
At present, the main mode of soil testing and formula fertilization only focuses on providing technical services for soil testing and fertilizer application. It does not emphasize the diagnosis and control of diseases and insect pests, the application of ancillary products, and the promotion of relevant supporting technologies to track comprehensive services, resulting in soil testing formulations. The actual effect of fertilization cannot be clearly demonstrated in some places. The use of soil nutrient tester is an important part of soil testing and fertilizer application.
The most important basis for the soil testing formula is the testing of soil nutrients. Only the rapid and accurate determination of soil nutrient content can guide the correct fertilization. However, the soil nutrient measurement method currently used in China is the method specified in the second national soil survey. The shortcomings of this method are: firstly, the analysis speed is slow and the timeliness is poor, which cannot meet the requirements of large quantities of soil samples. Second, the indicator system of this method was formulated based on the output of the 1980s, and the evaluation index was obviously low. Is not suitable for agricultural requirements; Third, the method is complex in operation and reagent consumption. The soil nutrient tester is currently an important instrument for testing soil nutrients.