After the typhoon, the late rice production was affected by different degrees. According to the rice production mode of Beihai, different remedies were adopted for different late rice.
I. Remedial measures after direct seeding of rice and late rice seedlings
1, timely cleaning seedlings. When retreating, use the gums to wash the leaves and dead seedlings along with the direction of the flow to wash the dead leaves and clean the dirt on the leaves to facilitate the photosynthesis and reduce the degree of overlap between the rice leaves after the water withdrawal. Washing is best done when the seedlings are barely exposed. If the water is washed back into the half-length of the seedlings, the seedlings will have a high lodging rate after retreating and the growth will slow down significantly.
2, appropriate control of the water layer. After the submerged seedlings, the viability is weak. Facing hot weather, it is prone to wilting lodging and even death. You can take 10-13 cm deep water, and then drain the field after 4 pm, and then re-irrigation shallow water in the morning.
3, increase fertilizer material. After shallow water irrigation, each field with urea and potassium chloride of 2-3 kilograms per acre, live tracts of 8-10 kilograms of urea or 10-15 kilograms of compound fertilizer per acre of the field, so that the seedlings will regenerate as soon as possible to promote the occurrence of white roots. Seedlings should be transplanted into Daejeon in a timely manner.
Second, late rice Daejeon remedial measures
1. Grab the water as soon as possible. It is necessary to clear and clear the drainage system in time to reduce the damage. As the affected rice fields are more afraid of drought, if it is cloudy, one-time drainage can be used; in case of hot weather in the hot sun, the upper part of the rice plant should be exposed to the water surface, and the rice fields should be drained in the afternoon to avoid exposure. It helps restore growth. Drainage should also pay attention to the removal of floating debris to reduce rice seedlings crushing and seedling leaf rot.
2, help Miao Dingmiao wash seedlings. Plant the lodging rice seedlings one by one by hand, and fix the roots to prevent them from lodging; then be careful when raising the seedlings to avoid cutting off the wounded leaves, and then use a sprayer to spray the debris on the rice plants to make them Restore physiological functions such as photosynthetic respiration faster.
3, timely control of water. After the stagnant water in rice fields receded, the moisture in the fields remained saturated. Sewage drainage should be conducted so that the soil water in the field can seep into the ditch and reduce the moisture content of the field as soon as possible so that the floating mud formed by flooding will gradually sink to promote the growth of new roots.
4, increase the available fertilizer. Nitrogen fertilization is the main fertilizer, combined with phosphorus and potassium fertilizer; within 3 days after drainage, urea 8-10 kg per mu or compound fertilizer 15-20 kg, or appropriate amount of compound fertilizer. Submergence time is short, rice seedlings are lightly affected, and the amount of fertilizer applied is less; on the contrary, the amount of fertilizer is more appropriate.
3. For paddy fields that have been immersed for a long time and the rotten seedlings have been rotted, plowing and plowing shall be promptly carried out. The seedlings shall be transplanted and transplanted with seedlings or replanted rice in a timely manner, or other crops may be changed according to the conditions of the plots. Such as vegetables, sweet potatoes, corn and so on.
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