Beware of fertilizers

Fertilizers have a contingent relationship and there are contradictions between them. For example, if more phosphate fertilizers are used, the excess available phosphorus will combine with available zinc in the soil to form insoluble zinc phosphate precipitates, which will cause effective zinc deficiency in the soil. Not only that, the excess available phosphorus will inhibit the crop's absorption of nitrogen, but also lead to boron deficiency, lack of copper. Another example is the application of more potassium fertilizer, will reduce the crop's absorption of nitrogen, magnesium, calcium, boron and zinc. Lime is a kind of calcium fertilizer, but too much lime will make the soil more alkaline, which will cause the lack of effective zinc, iron, manganese and boron in the soil. Even organic fertilizers cannot be used excessively. Due to the excessive application of organic fertilizers, the contradiction between soil microorganisms and crops will also appear "nitrogen-deficit", causing a temporary lack of nitrogen in soil for a period of time.

It is probably not a single phenomenon to apply partial fertilizers and to apply more simple fertilizers (such as urea, phosphate fertilizer, potash fertilizer, etc.) to crops. This not only wastes fertilizer, increases production costs, pollutes the environment, but also results in the lack of certain effective elements of the crop. Therefore, when fertilizing crops, it is necessary to increase the proportion of the various nutrient elements, and to reduce them. Promote the use of compound fertilizers and mixed fertilizers, because they are based on the results of soil surveys and the amount of fertilizer needed for crops, and the proportion of nutrient elements is more or less coordinated.

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