Rice drought-resistant and water-saving cultivation method

For three consecutive years of drought, the groundwater level in the Liaohe River Basin has dropped sharply. This poses a severe test once again for the Yingkou Rice Region in the lower reaches of the Liaohe River. Therefore, it is necessary to adopt some measures for rice drought-resistance and water-saving cultivation to alleviate drought and promote the reduction of production or the reduction of production.
1 Select the appropriate varieties to choose early maturing, medium maturing, fast-growing root system, more resistant to drought and salt-resistant varieties. For example, Liaowu 5, Qiuguang, Liao 294, etc., it is best to choose the drought-resistant rice varieties.
2 Cultivate Drought and Seedlings
2.1 to do a good selection, precision, timely, thin broadcast, to Miao Qi, Miao Zhuang.
2.2 Do a good job of seed and bed soil disinfection to prevent the transmission of diseases and yellowish blight.
2.3 The use of high-quality drought-resistant agents ?? Dryland dressing or seedlings to enhance seedbed drought resistance.
2.4 The use of double open or closed cover or non-woven seedlings, easy ventilation and hardening seedlings, refining seedlings; plastic film covering the bed to enhance insulation, moisturizing, is conducive to the cultivation of strong seedlings.
2.5 The bed surface should be controlled with less nitrogen fertilizer to increase growth, increase the carbon-nitrogen ratio of the seedlings, and enhance drought resistance.
2.6 Carry out pure and dry nursery and water-saving nursery, implement dry bed, dry leveling, pouring sole water, and sowing. Minimize watering after emergence, cultivate roots, and control the growth of leaf sheaths.
3 Save water and save water, and improving soil preparation is an important part of water saving cultivation.
3.1 Three dry ground preparations. That is, dry farming, dry leveling, and drought fighting.
3.2 The implementation of the original squeezing method can save 50% of the water for the soaking period per acre.
4 Re-apply basic fertilizer, apply 60%-80% of the total nitrogen fertilizer to the full-layer nitrogen fertilizer. The remaining 20%-40% is used as top-dressing fertilizer. All other fertilizers are used as one-time application before sowing. This is the lack of water. Year is one of the important measures to increase fertilizer utilization.
5 Focusing on rapid transplanting, properly planting and concentrating labor in a concentrated manner on the basis of rapid soil preparation. Since the lack of water affects the branching of the waterway, it is necessary to increase the density by 10% for close planting.
6 Water-saving irrigation This technology is both an emergency measure for water shortage years and a trend for the development of rice irrigation technology in the future.
6.1 Transplanting seedlings to the seedling stage This period is the most critical period for the ecological water requirement of rice. Since the root is planted and the amount of transpiration is large, the deep water layer must be maintained.
6.2 In the tillering period The early tillering stage is one of the critical periods for rice moisture. If water shortage will affect the early growth of the tiller, it will be disadvantageous for the formation of yield and shallow water should be maintained. With the increase of the number of tillers in the middle and late stages of labor, the ability to fight drought has reached the strongest, this period can save a large number of water sources, dry and wet irrigation, control of invalid tillering, improve the rate of success.
6.3 Young panicle differentiation period During the early stage of the fertility stage, shallow wet irrigation can be carried out. In the later stage of meiosis, shallow water layer should be maintained to avoid abortion.
6.4 Heading to maturity The heading to the grain filling period is one of the periods when rice is most prosperous. It needs sufficient water to keep the shallow water layer. After the wax ripening period, the water can be reduced appropriately and a shallow wet-dry irrigation method is used.
7 To prevent the occurrence of pests and water shortages in paddy rice for rice production, it is prone to rice blast and sheath blight, and it is necessary to attach great importance to the prevention and control of these two diseases. Generally, 2 packages of Jinggangmycin are applied per acre during the jointing stage, 1 package of Jinggangmycin per acre is used during the jointing period, and 100g of tricyclazole is added to prevent rice blast, sheath blight and rice smut.

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