At present, the temperature in the northeast region has gradually recovered, and the work of clearing snow and sheds has been steadily advanced. Due to the climate of winter and spring, the soil moisture content in the northeast region is high, and the threat of low temperature spring flood is greater. According to the forecast of the Central Meteorological Observatory, the average temperature in most parts of the northern part of the country was low in early April. In response to the current climate and production characteristics, the Rice Experts Group of the Ministry of Agriculture and Rural Affairs, together with the National Agricultural Technology Extension Service Center, proposed early swaying, early sowing, early soaking, early land preparation, early transplanting, rushing to farm, and rushing to accumulate temperature. "Technology path, strive to complete planting before April 20, complete the transplanting before May 25, laying the foundation for high yield rice.
Making bed in advance to prepare bauxite
In the northeastern part of the country, soil moisture is high in the spring, the temperature is warmer, and the difficulty of trampoline drainage and bed making increases. It is necessary to focus on the seedling bed, and prepare the soil for the preparation of the seedlings to ensure that the seedlings are nursed on schedule. Advocate the frozen side, prepare the frozen soil, and move into the buckled shed, take the frozen soil, warm it up, freeze it and dry it at any time. Vigorously promote high-level seedlings. When the depth of soil melting in the greenhouse is appropriate, immediately start to turn over the ground, dry, dilute and warm, and lay the high-bed seedbed to make the bed soil level and fine, to ensure that the standard of dry nursery is reached. The bed soil should be prepared to prevent the organic fertilizer from being mixed into the unfertilized organic fertilizer; it should be evenly mixed with the strong sputum agent. Mix well 1 to 2 days before loading, and cover with plastic film.
Optimized seeding at the right time
Focusing on safe heading, the sowing date is reasonably determined to ensure safety and maturity. Select rice varieties with strong cold tolerance, resistance to rice blast, and suitable maturity. Before seeding, do seed clearing, sun-breeding, germination test, seed disinfection, soaking and germination, etc. to ensure that the germination rate reaches over 90%. The thickness of the soil should be kept at 2 cm, and the soil should be covered by 0.5 cm after sowing. New-type business entities with large planting areas should be planted in a timely and timely manner.
Strengthen management and cultivate strong growth
In view of low temperature, multi-turn and other conditions, we adhere to standardized management, and actively adopt technical measures such as dredging ditches, high-level dry breeding, three-film coverage, and comprehensive warming to prevent cold and cold damage and cultivate strong growth. The management of seedbed bed is based on “tempering and water controlâ€. The measures of temperature increase, heat preservation and temperature control are comprehensively applied to ensure the temperature in the shed is 25°C~28°C, and the maximum temperature is not more than 30°C. Burn seedlings. In the first leaf growth period, the temperature in the shed should be controlled at 25 °C ~ 28 °C, the highest should not exceed 28 °C; 1 leaf 1 heart to 2 leaves 1 heart period, the temperature in the shed is controlled at 20 °C ~ 23 °C, the highest does not exceed 25 °C, to avoid the occurrence of early earing; 3 to 5 days before transplanting to apply the fertilizer. The water management of seedbeds should highlight the "dry" breeding and cultivate robust seedlings. When there is no leaf spit in the morning and evening, freshly curled leaves in the afternoon, and the surface of the bed soil is whitish, immediately replenish water. In the field of seedling nursery, it is necessary to adjust the water and fertilization management, replenish the water in time, and apply nitrogen fertilizer when the leaves are yellow and de-fertilized.
Prevention is the main scientific prevention and control
Strengthen the prevention and control of seedling diseases, and soak seeds for disinfection with suitable chemicals to prevent and cure disease. In the three steps of nutrient soil spray, seed dressing disinfection, 1 leaf 1 heart spray, etc., use appropriate chemicals alone or simultaneously to control the blight. If the rainy season turns fine during the nursery period, it is necessary to ventilate the seedlings early to prevent the occurrence of pests and diseases in the seedling stage. Take the medicine to the ground before transplanting to prevent the leaf miner.
Fine land preparation and timely planting
Adhere to the principle of “drying and flattening and shallow beating†to improve land preparation, ensure settlement time, and avoid the occurrence of seedlings, strong seedlings and weak seedlings. The dry land preparation should be at the end, to the side, without leaving a dead angle. The height difference in the same piece of land should not exceed 10 cm, and the surface should be guaranteed to have 10~12 cm of loose soil. After 3~5 days of watering the land, the water is leveled to make the surface smooth and the soil is finely divided. The height difference between the pool and the pool is no more than 3 cm, and the surface has 2~3 cm of mud. Vigorously promote the laser flat land technology, after the level of land level is within 3 cm, the water is not exposed. The transplanting should ensure high standards, high quality and high speed during the high-yield period, laying the foundation for high yield of rice.
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