The sowing time of late rice should be determined according to the local safe heading and flowering period and the number of days for different varieties from sowing to heading.
1. Selecting high-quality varieties According to market demand, high-quality late rice varieties that have been approved or recognized by the Crop Variety Approval Committee will be selected for local conditions. Conventional high quality rice seeds require annual replacement. According to the requirements of industrial development, one kind of land, contiguous planting.
2. Immersion seeding and drying, seed selection, soaking, disinfection and germination are equivalent to conventional rice seeds.
3. The method of raising seedlings Wet seedlings were cultivated by the method of moist seedlings. Two-stage seedlings were used for seedlings older than 35 days.
4. The sowing date and the sowing date in the transplanting period were determined to be able to guarantee the safety of the panicles as the standard. The safe heading period in Xiangbei was before September 10, in Xiangzhong was around September 15, and in Xiangdong and Xiangnan was on September 20. Day before. Sowing period: early maturing varieties are suitable from June 18 to June 26, mid-maturing varieties from June 15 to 22, late-maturing varieties from mid-June, special late-maturing varieties from June 10 to June 15, within this range. It should be early, Xiangdong, Xiangnan should be late. Early maturing cultivars were within 28 days of age and from July 18 to 22: mid-maturing cultivars were aged from 30 days to 35 days. Late-maturing cultivars were younger than 35 days. Over 35 days of larvae were reared in two stages.
5. Field cultivation
1 transplanting, according to the characteristics of different varieties of tillers, to determine the appropriate number of basic seedlings, in general, the use of moist rice transplanting quality of late rice transplanting specifications of 20 cm 20 cm, or the best use of wide and narrow row transplanting, that is, wide spacing and narrow spacing planting phase, size 16.7 cm (16.7 cm +33.3 cm), i.e. about 667 square meters per interpolation stump 16,000, 80,000 seedlings planting density to 100,000 seedlings, wherein the hybrid quality rice per 667 square meters Insert 70,000 seedlings to 80,000 seedlings. Dry seedlings are planted with 70,000 seedlings and 80,000 seedlings per 667 square meters, while hybrid high quality late rice is seeded with 50,000 seedlings and 60,000 seedlings per 667 square meters.
2 fertilization. Organic manure was dominant, sufficient base fertilizer was applied, and sub-fertilizer was re-applied to apply strong seed fertilizer. No panicle fertilizer was applied at the early stage of panicle differentiation or jointing stage. The specific fertilization amount is as follows: Basal fertilizer applies 1,000 to 1500 kilograms of farmyard manure per 667 square meters, 40 kilograms of ammonium bicarbonate and phosphate fertilizer, 5 days to 7 days after transplanting, combined with chemical weeding, 3 kilograms of urea per 667 square meters ~ 4 kg, potassium fertilizer 5 kg ~ 8 kg for the manure: early in the heading period of 667 square meters with grain full 1 package (50 grams) 50 kg of water spray. It is also possible to apply 35% of rice-specific compound fertilizer per 667m2 for 50kg, and apply it once in full-layer before transplanting in paddy field. Urea, ammonium sulfate, superphosphate, ammonium phosphate and potassium chloride can also be used alone. Fertilizer application. The application amount of pure nitrogen, pentoxide pentaoxide and potassium oxide per 667 square meters is 9 kg to 10 kg, 4 kg to 5 kg and 7 kg to 8 kg, respectively, of which nitrogen fertilizer and potassium fertilizer are 60% to 70% of base fertilizer. Phosphate fertilizer is all basal. Promote stitch ear harvested Lakes, with straw as an organic fertilizer.
â‘¢ water slurry management. Irrigation technology should be based on the use of water to regulate fertilizers, use water to regulate air, revitalize roots with roots, use roots to protect roots and preserve leaves. We should adopt the shallow water turning green, tillering moist measures. When high-quality rice 12 days to 15 days after transplanting, the number of seedlings per 667 m2 80% to 90% of spike program, start or Shaitian Tamada, two or three times using light resting, i.e. open field surface fine anhydrous crack, after panicle initiation and maintain irrigation shallow layer of water heading enough, strong wet and dry seeds, the latter kept moist to maturity. About 7 days before harvest, cut off water, and avoid water cuts prematurely.
4 Weed control. The use of pharmaceutical agents is specifically referred to in the article “High Quality Early Rice Cultivation Techniques†on page 9 of the 2006 issue of this publication. The application amount and application period should be based on the correct method of use for different herbicide varieties. 5 pest control. Pharmacy use specific reference "high quality early rice cultivation techniques." Appropriate application period is based on the pest forecast of the local agricultural technology department.
6. Harvesting 35 to 45 days after heading, maturity of about 95% is appropriate for harvesting. According to the variety of the collection, points drying, storage.
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