Select high, medium and low yield three types of plots. The core demonstrations of acceptance are the proportions of high, medium and low field types of 48.78%, 28.46% and 22.76%, respectively. According to statistics, the average core yield of 670m2 of corn is 701.8kg, an increase of 66.8kg over 635.0kg in the control field, and a 10.50% increase in the output of corn. The 66.7hmz display film is randomly sampled and tested for acceptance. The average yield is 617.4kg, which is 540.5kg more than the control field. The increase in yield was 76.9kg, and the increase in corn production was 14.2%. In the formula fertilization area, the yield of corn per 667m2 increased by 65-75 yuan. According to the local people's habitual fertilization method, the fertilizer cost is applied at 90-95 yuan per 667m2. The formulation area is fertilized according to the local soil testing and formula fertilization recommendation. The fertilizer application area is priced at 55-60 yuan per 667m2 of chemical fertilizer. From the perspective of the application of chemical fertilizers, the cost of applying chemical fertilizers is reduced by 35 yuan per 667m2 in the formula fertilization area. The implementation of soil testing and fertilization techniques will increase the efficiency by 100-110 yuan per 667m2, and the effect of cost increases will be significant.
The implementation of the soil testing and formula fertilization project prompted by the soil testing and fertilizer applicator has enabled the soil resource management and fertilization technology guidance to achieve three changes: the simple management of soil resource management, the lack of targeted nutrient management, and the continuous management of targeted nutrients. Transformation and fertilization techniques have shifted from qualitative or semi-quantitative fertilization techniques to quantitative precision fertilization techniques, and technical services have changed from traditional face-to-face services to information services. It provides a good technical platform for the future management of soil resources, pollution-free and green agricultural products. For the future, the combination of agricultural technology and information technology will further broaden the access of farmers and agricultural technicians to agricultural professional information, which will provide a great reference for upgrading agricultural technology service tools.
After the fertilizer formulated through the soil testing and formula fertilizing instrument is used, it is higher than the nitrogen, phosphorus and potassium fertilizer utilization rate of conventional fertilizer application by farmers. This shows that the implementation of soil testing and fertilizer application technology reduces nutrient loss and improves soil physical and chemical properties. Fertilizing the land will help control agricultural non-point source pollution, help protect the ecological environment and achieve sustainable agricultural development.
The principle of soil testing and formula fertilization adheres to the principle of “individual conditions, classification guidance, standardized management, and enhanced services†in order to realize the construction of resource-saving agriculture. Soil testing and formula fertilization can not only increase the comprehensive productivity of cultivated land, but also highlight the main crops and increase crop yield and quality. The effect of soil testing and formula fertilization in Hubei Province is very striking. The soil testing formulation of Hubei Province is based on soil testing and formulating fertilizer application instrument to measure and analyze soil nutrient, and then formulate fertilizer.