The summer corn mad long summer corn is applied with more nitrogen fertilizer, the vegetative organs grow vigorously, the formed carbohydrate is used for protein synthesis, the formation of fiber and lignin is reduced, the mechanical structure of stem and leaf tip is not developed, and the stem is soft and easy. Folded, and delayed flowering and firmness.
It is easy to cause excessive application of nitrogen to pests and diseases. The solubility of ammonium nitrogen in corn plants increases, the cell protoplasm is rich and the cell wall is thin, the leaves are drooping, the ventilation and light transmission between groups are poor, the air humidity is large, which is good for pests and diseases, and corn resistance The ability of pests and diseases is reduced.
Affecting the absorption of trace elements by crops and reducing the fertilization capacity The ammonium bicarbonate and urea in nitrogen fertilizers and the decomposition of bicarbonate will seriously affect the absorption of zinc by corn. For example, when the corn seedlings are stiff, the application of nitrogen fertilizer will make the dead seedlings more rigid; if the soil has too much nitrogen and encounters rainy rain during the pollen period, the starch stored in the pollen grains will be significantly reduced, resulting in poor fertilization and increased glutinous grains.
Destruction of soil structure Nitrogen fertilizer does not contain organic matter and does not have the effect of improving soil. Single application and long-term application of nitrogen fertilizers will gradually stagnate the soil and change the pH of the soil.
Author: Fan Hung Source: Agricultural Science and Technology News
It is easy to cause excessive application of nitrogen to pests and diseases. The solubility of ammonium nitrogen in corn plants increases, the cell protoplasm is rich and the cell wall is thin, the leaves are drooping, the ventilation and light transmission between groups are poor, the air humidity is large, which is good for pests and diseases, and corn resistance The ability of pests and diseases is reduced.
Affecting the absorption of trace elements by crops and reducing the fertilization capacity The ammonium bicarbonate and urea in nitrogen fertilizers and the decomposition of bicarbonate will seriously affect the absorption of zinc by corn. For example, when the corn seedlings are stiff, the application of nitrogen fertilizer will make the dead seedlings more rigid; if the soil has too much nitrogen and encounters rainy rain during the pollen period, the starch stored in the pollen grains will be significantly reduced, resulting in poor fertilization and increased glutinous grains.
Destruction of soil structure Nitrogen fertilizer does not contain organic matter and does not have the effect of improving soil. Single application and long-term application of nitrogen fertilizers will gradually stagnate the soil and change the pH of the soil.
Author: Fan Hung Source: Agricultural Science and Technology News
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