The key techniques of high-yield cultivation of super rice combined with rice planting systems and methods in various rice areas, according to the characteristics of super rice varieties, through the key technologies such as breeding, planting, fertilizer and water regulation, group optimization, comprehensive control, accurate quantification, etc., promote the formation of high-yield populations of super rice, improve The amount of material growth in the middle and late stages, and the increase in the total amount of flower in the group. By using the potential of super rice to increase production, we can achieve high yield of super rice.
Technical points:
1. Precision sowing, cultivating and growing
According to the ecological characteristics of different rice areas and the characteristics of super rice varieties, the sowing date was reasonably arranged. Improve the quality of seed and sowing quality, ensure the seedling rate and the quality of seedlings; control the amount of seeding and seeding, the seeding amount of hand transplanting is generally 7-8 kg/mu, and the seed amount is 0.6-0.8 kg/mu. The ratio of sputum is 1:10; the breeding of dry beds is 100-130 grams per square meter, and the drying of plastic trays is 25-40 grams per plate; the seeding rate of hybrid rice is 80-100 grams/pan, and conventional rice is 100-120 g/ On the basis of selected seeds and fine sowing, combined with shallow water irrigation, early application of manure fertilizer, chemical regulation, prevention and control of diseases and insects, etc., to reach Miaoyun and Miaozhuang.
2. Wet tillage level
1 week before transplanting rice fields, dry and wet tillage, drying, and ploughing 30 cm deep. Before applying tillage, apply organic fertilizer (50 kg of cake fertilizer, 40 kg of calcium, magnesium and phosphate fertilizer). Rotary tillage should be carried out 1 day before transplanting, and shallow water should be poured after flooding. It should not be repeated several times with water, and the soil should be flat. After transplanting.
3. Reasonable density, expanded thinning
Considering the growth characteristics of rice varieties, the density of hand-planted single-season hybrid rice is controlled at 1.2-1.4 million bushes per acre, and the row spacing is expanded to 26-30 cm. The conventional early rice planting density should be between 1.8 and 2 million bushes, and the transplanting should ensure that the seedlings are more than 55,000. The planting density of continuous hybrid late rice is between 1.6 and 18,000 bushes. The machine spacing is 30 cm, and the conventional rice machine is 12-16 cm. The hybrid rice machine is inserted at a distance of 17-20 cm, about 2 plants per plex, 1.1-1.3 million bushes per acre, and 15-20 pans per acre.
4. Irrigation
During the whole rice growth period, “three water, three wet and one dry†is adopted, that is, water is poured when transplanting rice, which is convenient for greening and living trees; when water is applied to remove insects, water is used to increase fertilizer utilization rate and improve insect removal effect; In the flowering stage of the booting stage, water is cut to prevent the degradation of the flowering flower; during the tillering, the ear forming stage and the fruiting stage, it is irrigated with shallow water and moist, dry and wet;
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