Latest Methods for Dealing with Excessive Nitrogen Fertilizer Application in Rice
Nitrogen fertilizer is one of the indispensable elements for rice growth; it can promote rice growth and has an improving effect, but we all know the meaning of going beyond the limit is as bad as falling short. If too much nitrogen fertilizer is applied, it will only harm the rice. So how should excessive nitrogen fertilizer application in rice be dealt with? Let's take a look at the detailed introduction together.
1. Harm of Excessive Nitrogen Fertilizer Application
The harm of excessive nitrogen fertilizer application is relatively great, and the harm at each growth stage is also different. If too much nitrogen fertilizer is applied at the tillering stage of rice, the aboveground parts grow too vigorously while the root system grows slowly, which will make it impossible for the root system to provide sufficient nutrients during rice tillering and cause blighted grains. If too much nitrogen fertilizer is applied during the growth period, the plants will grow luxuriantly, but the stems will be weak and the plants too tall, causing the lower parts to be shaded, with relatively high temperature and humidity, making it very easy to breed pests and diseases, and also very easy to lodge in the later stage, seriously affecting yield and even causing total crop failure in severe cases. Excessive nitrogen fertilizer application will not only lead to the accumulation of a large amount of nitrate nitrogen in the rice and cause poisoning, making it vulnerable in the later stage and causing severe yield reduction, but also increase the protein content of the rice, affecting the taste.
2. Treatment Methods
1. Excessive nitrogen fertilizer application easily causes premature senescence. Spraying potassium dihydrogen phosphate can both increase yield and prevent premature senescence. Generally, at the booting stage and heading stage, use 100-200 grams of potassium dihydrogen phosphate mixed with 15-20 kg of water and spray once. This has a clear effect on the seed-setting rate and grain weight of rice. Because it is a high-concentration spray, it is recommended to use high-purity potassium dihydrogen phosphate, and it is not advisable to use potassium dihydrogen phosphate with more impurities, so as not to affect the effect.
2. Pay attention to the application of silicon fertilizer to enhance the lodging resistance of rice. If conditions permit, appropriately apply 1-2 additional topdressings to enhance the lodging resistance of rice, especially for fields near lakes and seas, where the wind is strong, and lodging resistance prevention is necessary.
3. Pest and disease control must be done well. When spraying potassium dihydrogen phosphate, it can be combined with benzyl propiconazole to prevent rice false smut and sheath blight. If it is a variety infected with rice blast, tricyclazole or pyraclostrobin can be added.
The above is an introduction to the treatment methods for excessive nitrogen fertilizer application in rice. We hope it can help you. If you want to learn more related knowledge, please follow us.