What if there is too much nitrogen fertilizer? How to solve the problem of excessive application of nitrogen fertilizer in rice?

When the amount of nitrogen fertilizer is too much, the problem of too much nitrogen fertilizer can be solved: microbial bacterial fertilizer or humic acid fertilizer can be washed with too much base fertilizer, and phosphate fertilizer or calcium chloride solution can be sprayed on the leaves, which can reduce the fertilizer damage caused by too much base fertilizer and improve the charm of plants. In addition, when the soil temperature is high, tap water can be poured into the soil or too much base fertilizer can be diluted in the soil. Booting stage is the key period to promote high yield of rice, and the chemical fertilizer used at booting stage is called fertilizer protection. If it is in a busy paddy field, we must strictly control the use of base fertilizer, mainly potassium fertilizer.

Due to the excessive use of base fertilizer in heading fertilizer, the tillering of rice is accelerated, and the leaf length of rice exceeds the conventional standard due to the effect of base fertilizer, which leads to the flameout of rice when it does not reach the normal leaf age, resulting in the premature decline and death of leaves under rice due to lack of light. The production and storage level of organic matter in rice seedlings with excessive base fertilizer will also be limited to some extent, which will further affect the resistance of rice. Therefore, under the premise of too much base fertilizer, the susceptibility of rice diseases will increase.

Too much base fertilizer has accumulated a lot of nitrate nitrogen in rice, which leads to poisoning, premature death of lower leaves, easy aging of roots and inefficient collapse of stems, which leads to serious production restriction, too much chemical fertilizer, increased protein content of rice, poor quality and poor taste. The types and total amount of nutrients needed in the whole growth period and booting period of rice are different. When applying fertilizer, according to the characteristics that rice must be fertilized, if it is not fertilized, it will also lead to insufficient nutrition, drought resistance and disease resistance, which will lead to a decline in yield and quality. It will also lead to a small demand for rice or a large part of rice unable to absorb nutrient residues or outflow, resulting in fertilizer consumption.

Excessive application of phosphorus and potassium fertilizer in rice leads to nutrient deficiency, and calcium deficiency leads to limited rice yield. Too much phosphorus and potassium fertilizer will not increase rice yield. If there is too little potassium fertilizer, the growth and development of rice will be particularly slow, and the root system of rice will not be given the necessary nutrition, which will make the root system underdeveloped. But if there is too much potassium fertilizer, the potassium content in rice will be too high, and an enzyme in rice will be dissolved too much, which will seriously cause brown spot disease of rice. Tillering stage is the key period to increase the total number of plants. Fertilizers should be applied in advance at tillering stage and at intervals within half a month after sowing, usually once every other week.