Rational application of chemical fertilizers can greatly increase crop yields. So how do you use fertilizers reasonably? This must understand the acidity and alkalinity of the fertilizer.
When buying and using fertilizers, you must first understand the acidity and alkalinity of fertilizers. The acidity and alkalinity of chemical fertilizers can be divided into chemical acid and alkali and physiological acid and alkali.
Fertilizer acidity and alkalinity refers to the acidity and alkalinity of fertilizer dissolved in water. According to this definition, fertilizer can be divided into chemical acid fertilizer, chemical alkaline fertilizer and chemical neutral fertilizer. Ammonium sulfate, superphosphate, etc., which are acidic or weakly acidic in water, are chemically acidic fertilizers; ammonia, potassium carbonate, etc., which are alkaline or weakly alkaline in water, are called chemical alkaline fertilizers; Ammonium, potassium sulfate, calcium nitrate, etc., which are neutral or near neutral in water, are called chemical neutral fertilizers.
Physiological acidity and alkalinity refers to the acidity and alkalinity of the soil after the fertilizer is applied to the soil and absorbed by the crop. According to the different acidity and alkalinity present in the soil after the fertilizer is applied, the fertilizer can be divided into physiological acid fertilizer, physiological alkaline fertilizer and physiological neutral fertilizer. Ammonium sulphate is a commonly used nitrogen fertilizer. After application, it can be decomposed into ammonium ions and sulfate ions in the soil. Although both ions can be absorbed and utilized by plants, the amount of ammonium ions absorbed by plants is much greater than that of sulphuric acid. Roots, so most of the sulfate is left in the soil. At the same time that the plant absorbs ammonium ions, it releases hydrogen ions, making the soil acidic and physiologically acidic. After the fertilizer such as sodium nitrate or calcium nitrate is applied to the soil, the soil is alkaline after being absorbed and utilized by the plant, and thus it is called a physiological alkaline fertilizer. Ammonium bicarbonate, urea, etc., after being applied to the soil for absorption and utilization by plants, the soil exhibits a neutral or near-neutral fertilizer, which is called a physiological neutral fertilizer.
When people buy fertilizer to fertilize crops, they should determine the type of fertilizer to be applied according to the acidity and alkalinity of the soil, the sensitivity of the plant to acid and alkali, and the irrigating conditions to improve fertilizer efficiency and rational application. Neutral soils generally do not choose fertilizers, as long as the fertilization techniques can be used to better exert the effects of fertilizers. However, soils that are too acidic or too alkaline are not only detrimental to crop growth, but also force most nutrients in soil solutions to be less effective. Fertilizer and fertilizer are getting worse. In order to exert the economic benefits of fertilizers, acidic or physiological acid fertilizers such as ammonium sulfate and superphosphate should be used on alkaline soils; alkaline or physiological alkaline fertilizers such as calcium nitrate must be used on acidic soils. Its role is to neutralize the acid and alkali of fertilizers, regulate the acidity and alkalinity of the soil, and gradually transform it into the neutral direction to improve the solubility, availability and effectiveness of fertilizer nutrients. This is also an important measure to improve the soil. one. Conversely, if the acid fertilizer is applied to the acidic soil for a long time alone, the soil will be acidified, slabized and separated. On the calcareous or alkaline soil, the application of alkaline or physiological alkaline fertilizer will result in soil secondary. Salinization, structural deterioration and fertility degradation.
When buying and using fertilizers, you must first understand the acidity and alkalinity of fertilizers. The acidity and alkalinity of chemical fertilizers can be divided into chemical acid and alkali and physiological acid and alkali.
Fertilizer acidity and alkalinity refers to the acidity and alkalinity of fertilizer dissolved in water. According to this definition, fertilizer can be divided into chemical acid fertilizer, chemical alkaline fertilizer and chemical neutral fertilizer. Ammonium sulfate, superphosphate, etc., which are acidic or weakly acidic in water, are chemically acidic fertilizers; ammonia, potassium carbonate, etc., which are alkaline or weakly alkaline in water, are called chemical alkaline fertilizers; Ammonium, potassium sulfate, calcium nitrate, etc., which are neutral or near neutral in water, are called chemical neutral fertilizers.
Physiological acidity and alkalinity refers to the acidity and alkalinity of the soil after the fertilizer is applied to the soil and absorbed by the crop. According to the different acidity and alkalinity present in the soil after the fertilizer is applied, the fertilizer can be divided into physiological acid fertilizer, physiological alkaline fertilizer and physiological neutral fertilizer. Ammonium sulphate is a commonly used nitrogen fertilizer. After application, it can be decomposed into ammonium ions and sulfate ions in the soil. Although both ions can be absorbed and utilized by plants, the amount of ammonium ions absorbed by plants is much greater than that of sulphuric acid. Roots, so most of the sulfate is left in the soil. At the same time that the plant absorbs ammonium ions, it releases hydrogen ions, making the soil acidic and physiologically acidic. After the fertilizer such as sodium nitrate or calcium nitrate is applied to the soil, the soil is alkaline after being absorbed and utilized by the plant, and thus it is called a physiological alkaline fertilizer. Ammonium bicarbonate, urea, etc., after being applied to the soil for absorption and utilization by plants, the soil exhibits a neutral or near-neutral fertilizer, which is called a physiological neutral fertilizer.
When people buy fertilizer to fertilize crops, they should determine the type of fertilizer to be applied according to the acidity and alkalinity of the soil, the sensitivity of the plant to acid and alkali, and the irrigating conditions to improve fertilizer efficiency and rational application. Neutral soils generally do not choose fertilizers, as long as the fertilization techniques can be used to better exert the effects of fertilizers. However, soils that are too acidic or too alkaline are not only detrimental to crop growth, but also force most nutrients in soil solutions to be less effective. Fertilizer and fertilizer are getting worse. In order to exert the economic benefits of fertilizers, acidic or physiological acid fertilizers such as ammonium sulfate and superphosphate should be used on alkaline soils; alkaline or physiological alkaline fertilizers such as calcium nitrate must be used on acidic soils. Its role is to neutralize the acid and alkali of fertilizers, regulate the acidity and alkalinity of the soil, and gradually transform it into the neutral direction to improve the solubility, availability and effectiveness of fertilizer nutrients. This is also an important measure to improve the soil. one. Conversely, if the acid fertilizer is applied to the acidic soil for a long time alone, the soil will be acidified, slabized and separated. On the calcareous or alkaline soil, the application of alkaline or physiological alkaline fertilizer will result in soil secondary. Salinization, structural deterioration and fertility degradation.
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