Rice aims to raise the roots and protect the leaves

Wang Shengxuan, a researcher at the Provincial Academy of Agricultural Sciences Research Institute of Food Crops, believes that every year in the rainy season, regional heavy rainfall will occur in the north and south rice areas of our province, and local areas will accumulate disasters, especially rice planted in low-lying paddy fields, and some rice seedlings. Was not topped. After flooding, rice roots and leaves were severely damaged. The normal physiological metabolism and stress resistance of the plants were severely attenuated, and the number of total seedlings was severely reduced. If flooded paddy fields are not managed in a timely and effective manner, they will inevitably result in a significant reduction in production, or even an imperfection. Therefore, it is necessary to take scientific remedial measures in time for the flooded paddy fields in order to raise roots, protect leaves, and promote pupa as a goal, prevent and treat diseases and pests, increase the percentage of spikes, and increase grain gain.

Whether or not drainage of flooded rice can achieve production as soon as possible depends on drainage, and the level of output depends on whether remedial measures can keep pace. Therefore, excluding water from the field is an urgent task to restore rice growth after the disaster and is also the most effective remedy. To grab time, compete for speed, and take all necessary and possible means to assault and eliminate water in the field to reduce the risk of waterlogging. However, it should be noted that if a hot and sunny day is encountered after the disaster, it is not possible to drain the water at one time, but to retain about 3 cm of water in the field to prevent the evaporation of high-intensity foliage and cause plants to lose water and die.

Removing dirt from the leaves A layer of mud is often attached to the rice leaves after the disaster. This will block the stomata and affect the photosynthesis. When the sky is sunny and the leaves are white, use a rope to pull up the leaves to shake off the mud on the leaves and make the leaves green.

As early as possible, applying top-up fertilizer, water, and fertilizer supplements is a successful anti-disaster experience accumulated over many years. During the flooding of rice, the vegetative organs are damaged to varying degrees. After the drainage, the plants regain their growth and require a lot of nutrients, and the fertilizer is lost more after drainage. Therefore, according to the seedlings in time to recover fertilizer. The return fertilizer is generally applied 3 days after the retreat. Fertilizer is mainly available nitrogen fertilizer, and topdressing 8 to 10 kg of urea per acre, and with the application of potash, potassium chloride 7.5 to 10 kg per acre can be topdressed. Potash can not only Enhancing rice resistance to disease and disease resistance can also improve rice quality. In paddy fields with short submergence periods and light damage, the amount of fertilization may be less; some paddy fields with long submerged periods and heavy damage should be applied in appropriate ways, but multiple methods must be applied lightly to prevent excessive fertilization and fertilizer damage. seedling. While applying top dressing, you can spray high-efficiency foliar fertilizers to promote rapid plant growth.

After strengthening the water slurry management and drainage, on the basis of the sedimentation of the floating mud in the paddy field, adhere to the principle of dry and wet, intermittent irrigation of fresh water, both to maintain the ventilation of the soil and enhance the vitality of the roots, but also to meet the water needs of rice seedlings.

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