Formula fertilization consists of three aspects:
1. Soil testing: that is, the effective nutrient content of cultivated land is tested to see which nutrients are necessary for plants and which are less.
2. Formulation: After analyzing the soil test results, according to the fertilizer requirements of the crops, what to make up and how much to make up (the above two steps are generally completed by professional units).
3. Fertilization: It is mainly to adopt a reasonable fertilization method (such as acupoint application, ridge application, spreading, etc.) and the best fertilization period (this step is recommended by the professional unit during the topdressing period, and the farmers implement it). This year, the price of various fertilizers is 300-500 yuan/ton higher than last year. Through reasonable fertilization, the purpose of cost-saving and efficiency improvement can be achieved.
In production, if soil testing is carried out one by one, it is ideal to measure soil and fertilize, but it is difficult to achieve it in one household. According to the results of many years of field trials conducted by the Allied Fertilizer Station, the farmers will be introduced to the rules of formula fertilization to be mastered and followed for reference.
Due to the long-term excessive use of phosphate fertilizer in most of the cultivated land of Xing'an League, the phosphorus content in the soil is much higher than that in the 1980s. The results of soil testing show that it is generally more than doubled. On the contrary, due to the lack of attention to the supplement of potassium fertilizer, the content of potassium in the soil is seriously reduced. The current content is only about half of the potassium content in the soil in the 1980s. It can be said that the phosphorus content in the soil is sufficient and the potassium content is insufficient. That is why some fellows reflect the effect of using diammonium phosphate without the previous good results. Therefore, fertilizers containing nitrogen, phosphorus and potassium should be purchased in the selection of fertilizers, and the application ratio is preferably 1:0.29-0.40:0.29-0.40. If the proportion of chemical fertilizers that have been purchased is not suitable, it can be adjusted by adding nitrogen fertilizer and potassium fertilizer. In particular, for paddy fields and high-yield dry land plots with irrigated conditions, supplementing nitrogen and potassium fertilizers is important for increasing yield.
In the case of crops, for example, a compound fertilizer containing 15% of nitrogen, phosphorus and potassium and a total nutrient content of 45% is used as a base fertilizer. For example, 30 kg of base fertilizer can be applied per acre of rice, and 20 kg of urea can be recovered. 60% in the tillering period, 40% in the jointing and booting stage), and the application of silicon fertilizer in the base fertilizer 15-25 kg, nitrogen, phosphorus, potassium nutrient ratio is 1:0.33:0.33, the fertilization method is the application. On the corn, 25 kg of base fertilizer can be applied per acre, and 20 kg of urea can be chased (of which 50% are applied at jointing stage and large trumpet stage), and the ratio of nitrogen, phosphorus and potassium nutrients is 1:0.29:0.29, and the fertilization method is ridge. Shi, topdressing for the hole. Soybean can apply 20 kg of base fertilizer per acre, and chase urea 10 kg (in the initial flowering period), the ratio of nitrogen, phosphorus and potassium nutrients is 1:0.40:0.40, and the fertilization method is ridge application. On the potato, 18 kg of base fertilizer can be applied per acre, and 10 kg of urea can be chased (in the seedling stage). The ratio of nitrogen, phosphorus and potassium nutrients is 1:0.37:0.37, and the fertilization method is medium.
1. Soil testing: that is, the effective nutrient content of cultivated land is tested to see which nutrients are necessary for plants and which are less.
2. Formulation: After analyzing the soil test results, according to the fertilizer requirements of the crops, what to make up and how much to make up (the above two steps are generally completed by professional units).
3. Fertilization: It is mainly to adopt a reasonable fertilization method (such as acupoint application, ridge application, spreading, etc.) and the best fertilization period (this step is recommended by the professional unit during the topdressing period, and the farmers implement it). This year, the price of various fertilizers is 300-500 yuan/ton higher than last year. Through reasonable fertilization, the purpose of cost-saving and efficiency improvement can be achieved.
In production, if soil testing is carried out one by one, it is ideal to measure soil and fertilize, but it is difficult to achieve it in one household. According to the results of many years of field trials conducted by the Allied Fertilizer Station, the farmers will be introduced to the rules of formula fertilization to be mastered and followed for reference.
Due to the long-term excessive use of phosphate fertilizer in most of the cultivated land of Xing'an League, the phosphorus content in the soil is much higher than that in the 1980s. The results of soil testing show that it is generally more than doubled. On the contrary, due to the lack of attention to the supplement of potassium fertilizer, the content of potassium in the soil is seriously reduced. The current content is only about half of the potassium content in the soil in the 1980s. It can be said that the phosphorus content in the soil is sufficient and the potassium content is insufficient. That is why some fellows reflect the effect of using diammonium phosphate without the previous good results. Therefore, fertilizers containing nitrogen, phosphorus and potassium should be purchased in the selection of fertilizers, and the application ratio is preferably 1:0.29-0.40:0.29-0.40. If the proportion of chemical fertilizers that have been purchased is not suitable, it can be adjusted by adding nitrogen fertilizer and potassium fertilizer. In particular, for paddy fields and high-yield dry land plots with irrigated conditions, supplementing nitrogen and potassium fertilizers is important for increasing yield.
In the case of crops, for example, a compound fertilizer containing 15% of nitrogen, phosphorus and potassium and a total nutrient content of 45% is used as a base fertilizer. For example, 30 kg of base fertilizer can be applied per acre of rice, and 20 kg of urea can be recovered. 60% in the tillering period, 40% in the jointing and booting stage), and the application of silicon fertilizer in the base fertilizer 15-25 kg, nitrogen, phosphorus, potassium nutrient ratio is 1:0.33:0.33, the fertilization method is the application. On the corn, 25 kg of base fertilizer can be applied per acre, and 20 kg of urea can be chased (of which 50% are applied at jointing stage and large trumpet stage), and the ratio of nitrogen, phosphorus and potassium nutrients is 1:0.29:0.29, and the fertilization method is ridge. Shi, topdressing for the hole. Soybean can apply 20 kg of base fertilizer per acre, and chase urea 10 kg (in the initial flowering period), the ratio of nitrogen, phosphorus and potassium nutrients is 1:0.40:0.40, and the fertilization method is ridge application. On the potato, 18 kg of base fertilizer can be applied per acre, and 10 kg of urea can be chased (in the seedling stage). The ratio of nitrogen, phosphorus and potassium nutrients is 1:0.37:0.37, and the fertilization method is medium.
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