The hazard of excessive nitrogen supply to crops. The large application of nitrogen fertilizer will also make the cotton buds rare and easy to fall off, the sugar yield of beet roots decreased, the yield of fiber crops decreased, and the fiber quality decreased.
The hazard of excessive phosphorus supply in crops. Excessive phosphorus nutrition will promote the respiration of crops too strong, the dry matter consumed is greater than the accumulated dry matter, causing the reproductive organs to develop ahead of time, causing premature crop maturity, small grain and low yield. Excessive application of phosphate fertilizer will cause the silicon in the soil to be fixed and unable to be absorbed, causing the crop to be deficient in silicon, especially for the grass crops of Si-Si. If you can't absorb more silicon from the soil, if you can't absorb more silicon from the soil, you will suffer from silicon deficiency, such as slender stems, lodging and poor disease resistance.
The hazard of excessive potassium supply in crops. Excessive application of potassium fertilizer will cause the absorption of magnesium and calcium in crops to decrease, causing the occurrence of various diseases such as leafy rot disease and apple bitter disease; hindering the growth of crops, causing crops to fall easily. Symptoms; will cause some of the land's harmful metals and harmful bacteria to exceed the standard, destroy the nutrient structure and balance in the soil, leading to deterioration of soil properties and water pollution; it will also reduce the production of crops, severely weaken the production capacity of crops and reduce production.
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