The spring season is a good time to fertilize, but due to the cultivation of multiple crops, fertilizer needs will be different before different crops. Therefore, when applying fertilizer, in addition to understanding the crop's demand for fertilizer, you must also understand the fertilizer application. Some taboos are used to prevent crops from becoming fattened. The taboos of fertilizer application are as follows.
First, ammonium carbonate and urea cannot be mixed. When urea and ammonium carbonate are applied to fruit trees, the amide nitrogen in urea cannot be absorbed by the crops, and then converted to ammonium nitrogen by the action of adenase in the soil before it can be absorbed and utilized by the crops. After the ammonium carbonate is applied to the soil, it will cause an acidic reaction in the soil in a short period of time and accelerate the volatilization loss of nitrogen in urea. Therefore, the two cannot be mixed.
Second, ammonium carbonate cannot be mixed with bacterial fertilizer. Ammonium carbonate emits a certain concentration of ammonia, which has a certain toxic effect on the active bacteria in the bacterial fertilizer, causing the bacterial fertilizer to lose its fertilizer effect.
3. Alkaline fertilizers cannot be mixed with alkaline fertilizers. Do not mix acid fertilizers with alkaline fertilizers. For example, ammonium carbonate, ammonium sulfate, ammonium nitrate, and ammonium phosphate cannot be mixed with alkaline fertilizers such as plant ash, lime, and kiln ash potassium fertilizer, because the neutralization reaction will occur after mixing. Waste fertilizer and reduce fertilizer efficiency.
Fourth, do not water immediately after urea application. Watering the urea on the fruit tree immediately will cause the loss of the amide after the urea conversion. After the urea is applied, the soil covering method can be used to improve the fertilizer efficiency.
5. Avoid using ammonium nitrate. In the process of planting fruit trees, fruit trees are prone to excessive absorption of ammonium nitrate ions, which can cause poisoning of fruit trees.
Six, ammonium sulfate can not be applied for a long time. Long-term application of ammonium sulfate on the same soil will increase the acidity of the soil, destroy the soil aggregate structure, make the soil harden, and is not conducive to root growth.
7. Do not apply diammonium phosphate alone as a base fertilizer. Diammonium phosphate is a high-phosphorus, low-nitrogen, and potassium-free binary compound fertilizer. The proper use of nitrogen and potassium fertilizers is necessary to achieve better fertilizer efficiency.
8. Ban uncured manure. Undecomposed manure is easy to cause root burning and harm seedlings, especially virus disease.
Nine, do not apply too much high-concentration fertilizer. Excessive application of high-concentration fertilizers will directly damage the crop root system and affect the growth of healthy crops.
10. Avoid applying or applying phosphorus fertilizers. Applying or applying phosphorus will make it easy for the soil to be adsorbed and fixed by the soil, thereby reducing the fertility of the phosphorus.
Eleven, you can't just use micro-fertilizer. Using only micro-fertilizer will cause crop malnutrition and hinder growth and development, so it should be applied with other fertilizers.
12. Alkali fertilizer cannot be mixed with ammonium nitrogen fertilizer. The mixed application of alkaline fertilizer and ammonium ammonia fertilizer leads to an increase in ammonia volatilization loss and reduces fertilizer efficiency.
13. Chemical fertilizers cannot be mixed with bacteria such as rhizobium fertilizer. Chemical fertilizers are highly corrosive, volatile, and absorbent. When mixed with bacterial fertilizers, they can kill or resist live bacteria and make fertilizers ineffective.
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