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Consumption of sugar and energy stored in crops
Excessive application of phosphorus fertilizer will cause the crop to absorb too much phosphorus nutrients from the soil, which will greatly enhance its respiration. For example, rice absorbs an excessive amount of phosphorus, which will increase the number of ineffective tillers, shorten the leaves, and early heading and maturity, resulting in reduced yield.
Induced zinc deficiency in soil
Excessive application of superphosphate, a large amount of insoluble zinc phosphate in the soil, causing obvious zinc deficiency symptoms in the crop; excessive use of alkaline phosphorus fertilizer such as calcium magnesium phosphate, the soil will be alkalized, physical and chemical properties gradually deteriorate. Corn monoculture, rice stagnation, etc. are the result of zinc loss due to phosphorus in crops. At the same time, the phosphate example can also inhibit the absorption of trace elements such as sulfur and copper by crops. Breaking the soil nutrient balance leads to poor crop development.
Crop phosphorus is silicon
Silicon has a very positive effect on the growth and high yield of many crops. 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.
Crop phosphorus deficiency
Phosphorus and molybdenum in the soil are generally "friendly" under normal conditions and can promote each other and synergize with each other. However, too much is the use of phosphate fertilizer, often "strong phosphorus" phenomenon, and sometimes cause both losses, so that the crop can not absorb and use phosphorus and molybdenum.
Accumulation of harmful elements in soil
Phosphate fertilizer is mainly derived from phosphate ore, which contains harmful elements such as cadmium, lead and Buddha. According to foreign reports, the use of phosphate fertilizer will cause an increase in cadmium in the soil, causing harm to humans and animals. In particular, be alert to imported phosphate fertilizer.
What is the amount of phosphate fertilizer applied? Generally speaking, even if the soil is deficient in phosphorus, it should not exceed 40 kg per mu, preferably 30-35 kg. Phosphate fertilizer has a long-lasting effect and can be applied once every 2-3 years.
Excessive application of phosphate fertilizer is also harmful
Phosphorus is an essential element in the growth and development of crops. Appropriate application of phosphate fertilizer in phosphorus-deficient soil has a good effect on improving crop yield and quality, but excessive application of phosphate fertilizer is harmful.
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