The temperature of ammonium bicarbonate is low in winter, and the ammonium bicarbonate is not easily decomposed and decomposed, which is beneficial to improve the utilization rate of fertilizer. Ammonium bicarbonate belongs to ammonium nitrogen fertilizer. It can be directly absorbed and utilized by crops after being applied to soil, and has quick fertilizer effect. It is a typical “quick fertilizerâ€. It can provide nitrogen nutrition for crops in time. Some people have done experiments to apply ammonium bicarbonate in winter wheat fields, and the effect is 1 to 1.5 times higher than that in high temperature seasons.
Avoid applying urea urea is an ammonium amide fertilizer. It can not be directly absorbed and utilized by crops after being applied to the soil. It needs to be converted into ammonium nitrogen by the urease secreted by urea bacteria in the soil to be absorbed by the roots. Here, the rate of urea conversion depends mainly on the soil temperature at that time; under normal conditions, all urea applied to the soil is converted to ammonium nitrogen, which takes 7-10 days at a ground temperature of 10 °C and 4 ° at 20 °C. 5 days, only 2 to 3 days at 30 °C. It can be seen that crops are topdressed in winter or early spring. If urea is applied, it tends to affect crop growth because of slow fertilizer effect.
The absorption of phosphorus and zinc by phosphorus and zinc fertilizers is significantly affected by temperature and light. In winter, the temperature is low and the light is insufficient. It is easy to induce phosphorus and zinc deficiency in wintering crops. Phosphate fertilizer and zinc fertilizer should be added appropriately.
Wang Yutang, The Peasant Daily (February 18, 2011, 07 edition)
Avoid applying urea urea is an ammonium amide fertilizer. It can not be directly absorbed and utilized by crops after being applied to the soil. It needs to be converted into ammonium nitrogen by the urease secreted by urea bacteria in the soil to be absorbed by the roots. Here, the rate of urea conversion depends mainly on the soil temperature at that time; under normal conditions, all urea applied to the soil is converted to ammonium nitrogen, which takes 7-10 days at a ground temperature of 10 °C and 4 ° at 20 °C. 5 days, only 2 to 3 days at 30 °C. It can be seen that crops are topdressed in winter or early spring. If urea is applied, it tends to affect crop growth because of slow fertilizer effect.
The absorption of phosphorus and zinc by phosphorus and zinc fertilizers is significantly affected by temperature and light. In winter, the temperature is low and the light is insufficient. It is easy to induce phosphorus and zinc deficiency in wintering crops. Phosphate fertilizer and zinc fertilizer should be added appropriately.
Wang Yutang, The Peasant Daily (February 18, 2011, 07 edition)
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Steel Buckles With Surface Treatment
We can see buckles everywhere.
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