When the rice booting stage and heading stage are flooded, the nutrients accumulated in the stem and sheath have not been transferred to the panicle, and the nutrients in the stem and sheath are still abundant in this period. At the same time, the dormant buds on the stalk section in these two periods are generally within 5 mm, and have not yet stretched, and are less affected by the flood. Although the floods have receded, the rice leaves have silt and the sun is dry or dry (the most obvious heading performance), but the rice stalks and dormant buds are still alive, so the regenerated rice can be stored. For the field that is being grouted after the flowering, after the flood has receded for 3-7 days, it is determined that more than 20% can continue to fill the grain holding rate and remain in the field. After the eighty-yellow season, the harvest season will be retained in the early season, and the seed setting rate is low. At 20%, the seedlings are used to recharge and regenerate the rice; for some late-sown, late-planted fields, in the paddy field at the early or middle stage of the booting, when the flood is submerged for 48 hours, it is necessary to cut the seedlings to regenerate the reclaimed rice; During the booting stage (breaking period) to the beginning of the filling period and the inundation time is more than 48 hours, decisive measures are taken to cut the seedlings to regenerate the reclaimed rice. Its technical points: 1. Select a field suitable for accumulating flooded rice. After the flood, the rice fields that can regenerate the flooded rice are determined according to the state of the affected rice fields. 2. Apply a good seedling fertilizer. Quickly apply the quick-acting nitrogen fertilizer before cutting the seedlings to protect the roots and promote the buds, laying the foundation for the high yield of the reclaimed rice. The application rate of seedling fertilizer (urea) is 10-15 kg/ha, and the principle of early cutting (within 5 days after water withdrawal), multiple application of thin field, late cutting (after 5 days of water withdrawal), and less application of fertilizer field are grasped. 3. Cut the seedlings in time and keep the rice piles low. It is advisable to cut the seedlings after 3-5 days of flooding. When cutting seedlings, the rice pile should be kept low, and the pile should be kept about 20 cm (5-6 inches), which is conducive to the high yield of the regenerated rice. 4. Straw returning to the field. After cutting the seedlings, the whole field straw is evenly spread between the hybrid rice plants, which can increase the organic fertilizer through straw and return to the field, and win valuable time for self-rescue after the flood. 5. Water management. After the seedlings are harvested, the paddy fields maintain a shallow water layer or a moist state of about 3 cm to promote the recovery and growth of the first season rice roots. If the temperature is high during the flowering period, the paddy field should be filled with deep water to establish a deep water layer of 20 cm. The quick stacking door has many functions such as heat preservation and cold preservation, insect and wind prevention, dust insulation and sound insulation. Widely used in underground parking lots, industrial plants, food, textiles, electronics, printing and packaging, automotive assembly, precision machinery, logistics and warehousing and other places. Automatic Stacking Doors,High Speed Security Door,Rapid Stacking Folding Door,Automatic Stacking PVC Door Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.highspeedshutterdoor.com
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