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Soil fertigation station evaluation index system construction is an important part of soil testing and fertilizer application system, and it is the main method for screening and verifying soil nutrient testing methods. The construction of the FX3414 evaluation index system is to be developed in accordance with the "3414" program, which is widely used in the field of soil testing and fertilizer application. Its technical points include the following aspects:
1. Soil samples were collected and sampled according to different utilization methods and different soil types such as paddy fields, dry lands, vegetable fields, and forestry tea farms. Take one sample for every 200 mu of flat land and one for each 100 mu of mountain. For each soil sample, 5 to 10 points of representative “snake shape†or “plum shape†are selected as sampling points in the area of ​​the representative area, and 0.1 to 0.2 kg of soil is collected at each point for vertical cultivation (0 to 20 cm). Mixing is the soil samples taken, each weighing 0.5 - 1kg. Samples have one tag built in and one plugged in. Samples shall be taken before fertilizing the crops, and the pits and strips shall be avoided by fertilizing the ditch and hole.
2. Investigation of basic conditions in the field Record the crops, yield levels, fertilization levels, soil types, and sampling locations of the sampled field (field) blocks.
3. Analysis of soil samples Analyze the soil nutrient properties to be determined according to the relevant national standards, standards or soil analysis technical specifications, including soil organic matter, pH, alkali-hydrolyzable nitrogen, available phosphorus, available potassium, available boron, and available zinc.
4. Formulate a reasonable regional balanced fertilization plan Based on the basic information and data adopted, establish the basic information database of soil and fertilizer and water in our region, apply the soil testing formulation balanced fertilization expert system software to analyze and process the basic information data, and use village as a unit to formulate different villages. Balanced fertilization plan for different crops of cultivated land type. In view of the current situation of farmland soil and fertilizer in our region, the overall balanced fertilization plan is “addition of organic fertilizer and potash fertilizer, supplementation with boron and zinc and other micronutrients, and appropriate reduction of nitrogen and phosphate fertilizersâ€.
5, fertilization guidance to farmers technical training lectures and printed soil testing and fertilizer notification. Before the farmers purchase fertilizers and fertilize, technical personnel are asked to give technical training lectures to farmers and village leaders in order to improve the understanding of soil testing, fertilizer application technologies and technical and physical products, as well as to recommend the use of soil testing formulas for balanced fertilization. , The technology will be sent to the households and the farmers will be instructed to purchase and use high-quality formula fertilizers (BB fertilizer, compound fertilizer, organic compound fertilizer, etc.). At the same time set up to hold demonstrations of field experiments for farmers to observe the scene.
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