Planting water-saving and high-yielding rice by film-covering technology requires a frost-free period of 125 days or more, an effective accumulated temperature of not less than 2500°C, a soil layer thickness of 30 cm or more, a soil of clay or semi-sand loam, a soil pH value of 6.5-8, and an organic matter content of 1 Percentage of land with an annual rainfall of about 400 mm and irrigation conditions.
1. Seed selection and soil preparation. Choose middle-late-maturing, tillering, disease-resistant and drought-tolerant varieties that are suitable for the local climatic conditions, such as Autumn 103. When the site preparation is done, the pool will be made flat according to the flatness of the plot. Each pond will have an area of ​​100-600 square meters. After the pond is filled with water, the leeches will be used, and then the surface of the pond will be leveled so that the surface of the pond will have no roots and the height difference will not exceed 2 cm. The inner water layer of the pool is naturally dry.
2. Cover and sow. About 10 days before sowing film, spray herbicides and insecticides and then film. Membrane spacing 20 cm. Treat seeds before sowing. When sowing, each surface of the pond was hit with 4 rows of holes, 6-7 seeds per hole were sown, and the farmhouse fertilizer and fine soil fertilizer were used to cover the seed holes.
3. Water and fertilizer management. The tillering period, panicle differentiation period and flowering filling stage were the critical periods of irrigation, and the water supply during the tillering period was 3-4 times irrigation. The panicle initiation period and flowering filling period were each irrigated 2-3 times, and the irrigation amount per mu was about 35 cubic meters. Mushi farmyard fertilizer 2000 kilograms, nitrogen fertilizer 12.5 kilograms, phosphate fertilizer 6 kilograms, potassium kilograms 5 kilograms, zinc sulfate 1.5 kilograms, after mixing with the soil to do the pool. (1) Promote fattening. Rice seedlings 4 leaves 1 heart to 5 leaves 1 heart is scattered, Mushi nitrogen fertilizer 3.3 kilograms. (2) Attacking panicle fertilizer. When the young panicle grows 2-3 cm long (in early July), M. N. applied 1.9 kg of nitrogen fertilizer. (3) Heavy grain fertilizer. Applying at the heading stage, Mushi nitrogen fertilizer 1.1 kg.
4. Plastic film processing. Irrigation with groundwater can maintain a layer of water in the middle of rice growth, with a depth of 3 cm. The film removal time is early in the jointing stage of rice, that is, the beginning of July. The method is to lift the film from one end and transport it out of the paddy field after irrigation, and it can also remove the film after rice is cut, but it must be cleaned up.
5. Harvest. After entering the ripening period, when all rice grains turn yellow, they are promptly harvested, threshed, and dried in storage.
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