Application and amount of fertilizer

Now, our country advocates the production and use of high concentration fertilizers, which is really of great benefit to improve the quality of fertilizers, reduce transportation costs and prevent inferior products from flooding the market. However, with the development of fertilizer to the direction of high concentration, it will also cause some disadvantages. First of all, it may go against the law of fertilizer demand of crops, resulting in waste of fertilizer and environmental pollution. With the use of high concentration fertilizer, the amount of fertilizer applied per mu will inevitably be reduced, especially when some farmers are used to withdrawing fertilizer, which will inevitably lead to uneven distribution of fertilizer or reduction of fertilizer occupied by a single crop. We know that the amount of fertilizer needed at the early stage of crop growth is reduced, when the high concentration fertilizer applied as base fertilizer is absorbed and utilized less, it is easy to form waste and environmental pollution, and when crops are in a vigorous period of vegetative growth and reproductive growth, fertilizer supply may be insufficient when a large amount of fertilizer is needed. If a large amount of high concentration fertilizer is used, it will not only lead to waste and increase agricultural costs, but also reduce the quality of agricultural products, and the harvest will not be able to enter the market because of excessive nitrate and other residues, and ultimately unable to achieve value. Second, it is easy to lead to the deterioration of soil ecological environment, resulting in the occurrence of physical diseases. Due to the high purity of high concentration fertilizer, it is difficult to mix medium and trace elements, if organic fertilizer and trace element fertilizer can not be applied together, it will inevitably lead to the deterioration of soil ecological environment, resulting in a variety of crop deficiency and physiological diseases. the rate of return of fertilizer will be greatly reduced, which will directly affect the quality, quality and cost. Third, it will reduce the rate of return of fertilizer and increase the cost of agriculture. According to the current situation of fertilization in rural areas, the application amount of a large number of element fertilizers such as nitrogen fertilizer and phosphate fertilizer is no longer the main problem, the crux of the problem is how to reduce the mutual antagonism between elements and improve the utilization rate of fertilizer, at this time, the deficiency of high concentration fertilizer will be obvious. As almost all farmers know little about the interaction of element fertilizers, it is impossible to take the initiative to take regulatory measures. In order to achieve the goal of changing elements from mutual antagonism to mutual promotion, we should mainly rely on scientific and technological departments and fertilizer manufacturers to adjust the proportion of elements in production.