The hazard of excessive nitrogen supply to crops. Excessive supply of nitrogen fertilizers hinders crop growth and produces toxic nitrite, which makes the crops mature and mature, and prolongs the growth period, mainly in the thin cell wall, soft plants, susceptible to mechanical damage and barley brown rust, wheat scab, rice brown spots. Diseases and other diseases. 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 application of phosphorus fertilizer will cause the crop to absorb too much phosphorus nutrients from the soil. 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 also cause the silicon in the soil to be fixed and not 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. Potassium fertilizer is a fertilizer for potassium nutrients needed for plant growth. Appropriate application of potassium fertilizer can make grain kernels full, promote the increase of roots such as potatoes and potatoes, increase the sugar content of fruits, and increase the tillering of grasses and other grass crops. Make the stems of the plants thick and strong, not easy to fall, and enhance the ability to resist drought, cold and disease. 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 harmful impurities and harmful bacteria in some plots 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, seriously weaken the production capacity of crops and reduce production.
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