The goal of rice is to cultivate roots, protect leaves and promote tillers.

Wang Shengxuan, an associate researcher at the Food and crop Research Institute of the Provincial Academy of Agricultural Sciences, believes that when the rainy season enters every year, there will be regional heavy rainfall in the north and south rice regions of our province, causing flooding in some areas, especially rice planted in relatively low-lying paddy fields. Some rice seedlings are not topped. After flooding, the roots and leaves of rice were seriously damaged, the normal physiological metabolism and stress resistance of the plant were seriously weakened, and the number of total tillers decreased seriously. If the flooded rice fields are not managed timely and effectively, the yield will be greatly reduced, or even no harvest. Therefore, scientific remedial measures should be taken in time for flooded rice fields, aiming at root cultivation, leaf protection and tiller promotion, so as to control diseases and insect pests, increase panicle rate, grain yield and weight.

Whether the yield of flooded rice can be obtained by drainage as soon as possible depends on the time of drainage, while the yield depends on whether the remedial measures can catch up. Therefore, the removal of stagnant water in the field is an urgent task to restore rice growth after the disaster, and it is also the most effective remedial measure. It is necessary to scramble for time and speed, and take all necessary and possible means to remove stagnant water in the fields and reduce the harm of waterlogging. However, it should be noted that if you encounter high temperature, sunny and hot weather after waterlogging, the field water should not be drained at once, but the water layer of about 3 cm in the field should be retained to prevent high intensity foliar evaporation from causing physiological water loss and death of the plant.

After removing the soil from the leaves, a layer of sediment is often attached to the rice leaves, which will block the stomata and affect photosynthesis. When the sunrise on a sunny day and the leaves turn white, the rope can be used to pull on the leaves to shake off the sediment on the leaves and return the leaves to green.

It is a successful experience accumulated for many years to restore fertilizer, water, wound and supplement as soon as possible. During the flooded period of rice, the vegetative organs were damaged to varying degrees, and the plant regained growth after drainage, which required a lot of nutrition, and more fertilizer was lost after drainage. Therefore, it is necessary to recover fat in time according to the situation of seedlings. Recovery fertilizer is generally applied 3 days after water withdrawal, mainly available nitrogen fertilizer, urea 8kg / mu, combined with potassium fertilizer, potassium chloride 7.5kg / mu, potash fertilizer can not only enhance rice lodging resistance and disease resistance, but also improve rice quality. The amount of fertilizer applied can be less in the rice fields with short inundation time and light damage, and more fertilizer should be applied in some rice fields with long submergence time and heavy damage, but the method of light application must be taken many times to prevent excessive fertilization at one time, resulting in fertilizer damage to seedlings. At the same time of topdressing recovery fertilizer, high efficiency foliar fertilizer can be sprayed to promote rapid recovery of plant growth.

After strengthening the water slurry management and drainage, on the basis of settling the floating mud in the paddy field, adhering to the principle of dry and wet, intermittent irrigation of fresh water can not only maintain soil ventilation, enhance root activity, but also meet the water needs of rice seedlings.