Excessive nitrogen fertilizer damages rice
1. Excessive nitrogen fertilizer will cause rice to be greedy, with strong vegetative growth and low seed setting rate. It will cause low yield of rice and damage the economic income of farmers.
2. Excessive nitrogen fertilizer will cause an increase in pests and diseases. Because the stems and leaves are relatively young, it is likely to cause difficulty in controlling the rice leaf roller, and in recent years, the mites are more serious. Very serious, in general, excessive nitrogen fertilizer will also cause sheath blight, rice blast disease, severe blight, and rice planthoppers will be serious.
3. Excessive application of nitrogen fertilizer will cause lodging in the later stage. Nitrogen fertilizer will make rice vegetative growth strong, and the inter-segment distance will lengthen, which may cause lodging in late rice.
Method for treating excessive nitrogen fertilizer in late rice
1. Spray potassium dihydrogen phosphate to increase the yield and prevent premature aging.
2. It is recommended to spray 100-200 g of potassium dihydrogen phosphate (Phosphorus Potassium Source Pool) with 15 kg of water at the booting stage and heading stage, which will help the 1000-grain weight and seed setting rate of the late rice. Because it is a high-concentration spray, it is recommended to use high-purity potassium dihydrogen phosphate such as a phosphorus potassium source library. It is not recommended to use more potassium dihydrogen phosphate.
3. Appropriate use of silicon fertilizer to enhance the lodging resistance. Conditional farmers can use 1-2 times of silicon fertilizer to enhance the lodging resistance of rice, especially in farmland near the edge of the lake, such as Jiangsu. The wind is large and anti-fall prevention is a must.
4. Pest control must be in place. It is recommended to use benzproppirazole and potassium dihydrogen phosphate (potassium phosphate source) together to prevent rice smut and sheath blight, susceptible to rice blast, and it is recommended to add tricyclazole or pyraclostrobin to prevent it. .
In traditional rice cultivation, growers are very dependent on nitrogen fertilizer, and some are relatively neglected for phosphorus and potassium fertilizers, which is still unfavorable for high yield of rice. However, if it is an appropriate amount of nitrogen fertilizer, it will certainly help the growth and high yield of rice.
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