Look at the land to select fertilizer crops can grow well alkaline land is suitable for the selection of these fertilizers
Soil salinization is the most common phenomenon in farmland, which is related to improper application of soil fertilizer, too little application of organic fertilizer, shallow plough layer and other factors. Saline-alkali soil fertilizer can not be misused or it will only aggravate salinization. At the same time, for acid fertilizers, it is necessary to avoid losing fertility because of neutralization reaction. So how to apply fertilizer for saline-alkali land? Let's introduce it in detail.
Avoid the use of acid fertilizer
Because the farmland soil is alkaline, if it is an acidic fertilizer, it will naturally lead to a decrease in fertilizer efficiency, and attention should be paid to the element ions that react with hydroxide. Such as acidic potassium dihydrogen phosphate fertilizer, the efficiency of such fertilizer will be greatly reduced after application. For example, calcium superphosphate is not only acid-base reaction, but also calcium ion can hurt hydroxide reaction and is difficult to be absorbed and utilized by plants.
At the same time, alkaline fertilizers should be used as little as possible, after all, the soil has been salinized, if you continue to use alkaline fertilizers, it will only aggravate the salinization of the soil. For example, ammonium sulfate, calcium superphosphate, potassium carbonate and so on.
What kind of fertilizer do you use?
The best fertilizer for saline-alkali soil is organic fertilizer (including farm manure), which not only helps to greatly improve soil acidity and alkalinity, but also helps to increase soil fertility. In fact, the cause of soil salinization in many farmers is not the problem of cultivated land, but more of the problem of fertilization, on the one hand, the application of organic fertilizer is too little, and on the other hand, they do not know how to control the long-term use of chemical fertilizer. The natural soil is becoming more and more barren and the degree of salinization is higher and higher.
In addition to applying a large amount of organic fertilizer, bacterial fertilizer can also be considered. This is a new type of fertilizer with high efficiency to provide nutrition for crops through bacterial metabolism. Although the effect of this kind of fertilizer is slow, it is very helpful for farmland ecological protection. However, organic fertilizer and bacterial fertilizer provide limited fertilizer for crops, after all, in the vigorous stage of crop growth, we still need appropriate chemical fertilizer, such as urea, ammonium bicarbonate and other fertilizer can also be used. In addition, fertilizers such as potassium chloride and potassium sulfate are also available.
The above is the view that science promotes agriculture to share for you, hope to be helpful to you.
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