What to do after rice flood damage? Latest remedial measures
Rice is an important food crop in China. In the rice-growing regions of the south, rainfall is abundant, and during the annual plum rain season, rice often gets submerged. Once submerged for more than 48 hours, it is highly likely to cause the entire plant to die. So what should be done after rice flooding? Let's take a look at the detailed introduction below.
1. Drain water and expose seedlings
After the water recedes, drain water promptly, clear ditches, and remove silt to reduce waterlogging, so that the submerged seedlings can emerge from the water as soon as possible and enhance respiration. When draining water to expose the seedlings, also pay attention to the weather. If it is cloudy, the water can be drained completely in one go; but if it is sunny, a shallow water layer should be kept in the field to meet the water needed for seedling transpiration and avoid death from dehydration. After the seedlings recover, drain the field to expose it and restore growth. For plants that were submerged but not for long and have not died, promptly expose the seedlings and wash the leaves, washing off the mud on the leaves. For lodged seedlings, set them upright to promote normal growth.
2. Fertilization
For early rice at the booting and grain-filling stage, after timely drainage and washing of the leaves, spray potassium dihydrogen phosphate solution according to the seedling stage, to strive for large panicles, increase grain weight, and maintain yield, while also preventing pests and diseases. For middle rice at the tillering stage, also drain water and wash the leaves promptly, then after irrigating with shallow water, apply 2.5 kg of urea and 4 kg of potassium fertilizer per mu to promote rapid recovery, and also pay attention to outbreaks of diseases and strengthen prevention and control. For late rice seedlings, promptly plow and prepare the field, and after exposing the field and irrigating with shallow water, apply 5 kg of urea per mu to promote rapid recovery of the seedlings and root growth, and improve the survival rate.
3. Replanting and changing crops
For plots that were submerged and lack seedlings, replant promptly to ensure a full stand and reduce losses. If most of the seedlings have died, promptly change to other plants according to the growing season and temperature conditions. Rice that can continue to be grown should be rescued promptly, while rice that cannot be rescued should promptly be changed to dry crops, such as potato, mung bean, buckwheat, etc., to avoid wasting the land.
The above is an introduction to what should be done after rice flood damage. We hope it can help you. To learn more related knowledge, please stay tuned to us.