Calcium nitrate is a new type of chemical fertilizer that has been widely used in developed countries. It not only guarantees the highest content of nitrate nitrogen, but also solves the problem that calcium is poorly fluid and difficult to dissolve in water. It is a nitrogen-containing and fast-acting calcium. The new high-efficiency compound fertilizer can improve the soil to increase the structure of the pellets so that the soil does not agglomerate, and the apples can rapidly supplement nitrogen and calcium, improve the status of soil nitrogen deficiency and calcium deficiency, promote the normal growth and development of apples, reduce the production cost, and increase the income of the farmers. . The application of calcium nitrate in apple production has several advantages:
First, the safety performance is good, easy to store and transport
Calcium nitrate is a safer nitrate fertilizer than ammonium nitrate. Due to the presence of calcium, its hygroscopicity is lower than that of ordinary ammonium nitrate, which improves the agglomeration and thermal stability. It is not easy to store and handle. The risk of fire and explosion.
Second, with nitrate nitrogen and quick-acting calcium as the mainstay, apple is easy to absorb and use
(1) Calcium nitrate is a new type of high-efficiency chemical fertilizer containing nitrogen and available calcium, which contains a large amount of nitrate nitrogen and can be directly absorbed and utilized by plants.
(2) Calcium is one of the essential nutrients for apple growth and development, and plays an important role in the growth and development of apples, which can effectively prevent the occurrence of apple bitter disease. According to an analysis by Apple experts, the demand for calcium in apples is second only to nitrogen and potassium, and higher than phosphorus.
Third, small evaporation loss, high utilization rate
According to relevant domestic and foreign data, the nitrogen loss of urea and ammonium bicarbonate during storage and use is 40-50%. The annual environmental pollution caused by the loss of nitrogen in China is also quite serious. Therefore, improving the utilization rate of fertilizers and protecting the environment has become a crucial issue in China's agricultural development. Calcium nitrate contains nitrate nitrogen, which can be directly absorbed by apple without soil conversion. The loss of nitrogen volatilization is small. It can be used as a base fertilizer and top dressing. It can quickly supplement nitrogen with apple. It is a highly efficient and environmentally friendly fertilizer. Has a good promotion prospects and application value.
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