Accurately Determine Soil Nutrients and Manage Scientific Fertilization
The status and quality of soil nutrients are affected by many factors and environmental factors, including the soil's own conditions, the types of crops planted, the types of fertilization time, and so on. The soil nutrient fastness meter can determine the status of soil nutrients, which provides convenience for scientific research experiments and summary. In reality, we often need to know the specific conditions of soil nutrients and learn more about the information of soil nutrients in order to more accurately conduct scientific fertilization and field management.
After the physical and chemical reactions of various elements added to the soil and the soil, the adsorption and fixation ability of the nutrient directly affects the yield increase effect of fertilization. Therefore, to determine the amount of fertilization, not only the requirements of the crop yield on nutrients and the content of soil nutrients should be considered, but also Consider the ability of soil to adsorb and fix nutrients. The ability of the soil to adsorb nutrients differs depending on the type of soil and the chemical properties of the elements.
1 Soil nutrient study method in our province shows that the method has good application effect, can comprehensively reflect the status of soil nutrients, indicate the nutrient limitation factors of field experiments, improve the accuracy of the test, reduce blindness, and Soil fertilization and promotion of balanced fertilization provide new and powerful theories and methods, and its application prospects are very broad.
2 The pot experiment showed that the current main limiting factor of the two soils is N deficiency, followed by P deficiency and Zn deficiency again.
3 Field trials have shown that the effect of phosphorus on cotton is significant on the basis of nitrogen and potassium application, or on the application of nitrogen, potassium and zinc. Increasing the amount of phosphate fertilizer also increases yield. Liulin field trials showed that, except for a few elements such as boron and manganese, the Liulin chestnut soil lacks all kinds of nutrients needed for crops. In addition, the application of KCl and K2SO4 fertilizers has basically the same effect on potato yield. The traditional local fertilization obviously cannot meet the needs. It is necessary to vigorously increase the quantity and type of fertilizers and implement balanced fertilization.
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