1: What is soil testing formula fertilization A: soil testing formula fertilization, which includes three processes. The first is to test the effective nutrients in the soil to understand the soil nutrient content, which is the soil test; the second is based on the expected yield of the crop you are planting this year, we call it the target yield, and then according to the crop The fertilizer requirement and soil nutrient status, calculate the various fertilizers and dosages required, which is the formula; the third is to rationally arrange the various fertilizers required, to make base fertilizer, seed fertilizer and application ratio and application technology, which is Fertilize.
2: What is the role and significance of soil testing and formula fertilization?
A: First, soil testing and formula fertilization is the main way to improve fertilizer utilization.
At present, the average annual fertilizer utilization rate in China is only 30%, nitrogen fertilizer is 20%-45%, phosphate fertilizer is 10%-25%, and potassium fertilizer is 25%-45%. There are many reasons for the low utilization rate of fertilizers, but the amount of fertilizer and the proportion of fertilization are unreasonable, which is the main factor. By carrying out soil testing and formula fertilization, it is possible to reasonably determine the amount of fertilizer and the proportion of nutrients in the fertilizer, and effectively improve the utilization rate of fertilizer.
Second, the promotion of soil testing and formula fertilization is an important measure to achieve "improve quality, save costs, increase efficiency".
Fertilizer is an important production material in agricultural production, accounting for more than 50% of the production input of the crop industry, which is directly related to the cost and quality of agricultural products. The soil testing formula fertilization technology can effectively control the amount of fertilizer input and the proportion of various fertilizers, so as to reduce costs, increase production and increase income.
Third, the economic benefits are obvious.
Soil testing and formula fertilization first showed obvious effects of increasing production and income, as shown in:
Adjust fertilizer and increase production. Without increasing investment in fertilizers, only adjusting the proportion of fertilizers such as nitrogen, phosphorus and potassium will increase production and income. For example, Hubei Donggang adjusted the proportion of chemical fertilizer from 1:0.17:0.25 in 1980 to 1:0.57:0.7 in 1992, which increased the county's rice production efficiency by 64%. Weight loss increases production. In high-yield and high-yield areas, the yield increase or the production effect can be achieved by reducing the amount of fertilizer used. For example, after the implementation of the “rice nitrogen adjustment method†in the Pearl River Delta of Guangdong, the amount of nitrogen fertilizer was reduced by about 40%, while the yield of rice was still increased by more than 10%. Increase fertilizer and increase production. For example, in Shaanxi Province, soil fertility was found in some areas, and potassium was applied in some areas. Potassium fertilizer was applied, and the yield of crops increased by 15%-23%.
In addition, soil testing and formula fertilization can also fertilize soil fertility, protect ecology, coordinate nutrients, prevent and control diseases, and rationally allocate limited fertilizer sources.
2: What is the role and significance of soil testing and formula fertilization?
A: First, soil testing and formula fertilization is the main way to improve fertilizer utilization.
At present, the average annual fertilizer utilization rate in China is only 30%, nitrogen fertilizer is 20%-45%, phosphate fertilizer is 10%-25%, and potassium fertilizer is 25%-45%. There are many reasons for the low utilization rate of fertilizers, but the amount of fertilizer and the proportion of fertilization are unreasonable, which is the main factor. By carrying out soil testing and formula fertilization, it is possible to reasonably determine the amount of fertilizer and the proportion of nutrients in the fertilizer, and effectively improve the utilization rate of fertilizer.
Second, the promotion of soil testing and formula fertilization is an important measure to achieve "improve quality, save costs, increase efficiency".
Fertilizer is an important production material in agricultural production, accounting for more than 50% of the production input of the crop industry, which is directly related to the cost and quality of agricultural products. The soil testing formula fertilization technology can effectively control the amount of fertilizer input and the proportion of various fertilizers, so as to reduce costs, increase production and increase income.
Third, the economic benefits are obvious.
Soil testing and formula fertilization first showed obvious effects of increasing production and income, as shown in:
Adjust fertilizer and increase production. Without increasing investment in fertilizers, only adjusting the proportion of fertilizers such as nitrogen, phosphorus and potassium will increase production and income. For example, Hubei Donggang adjusted the proportion of chemical fertilizer from 1:0.17:0.25 in 1980 to 1:0.57:0.7 in 1992, which increased the county's rice production efficiency by 64%. Weight loss increases production. In high-yield and high-yield areas, the yield increase or the production effect can be achieved by reducing the amount of fertilizer used. For example, after the implementation of the “rice nitrogen adjustment method†in the Pearl River Delta of Guangdong, the amount of nitrogen fertilizer was reduced by about 40%, while the yield of rice was still increased by more than 10%. Increase fertilizer and increase production. For example, in Shaanxi Province, soil fertility was found in some areas, and potassium was applied in some areas. Potassium fertilizer was applied, and the yield of crops increased by 15%-23%.
In addition, soil testing and formula fertilization can also fertilize soil fertility, protect ecology, coordinate nutrients, prevent and control diseases, and rationally allocate limited fertilizer sources.
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