Spring sowing technology
Select varieties Hybrid rice, super rice, and high-quality rice have a wide coverage and high yields. Teyou 63, Teyou 009, Yiyou 673, Teyouhang No. 1, Tianyou 3301, Fengliangyou 1, Tianyou 998, and Tyou 551 are all good choices. Suitable sowing date The late-maturing varieties were sowed before mid-February and the medium-maturing varieties were sowed in mid-to late February. The early-maturing varieties were sown in early March to ensure that the transplanting work was basically completed before mid-April, and the panicles were harvested in mid-June and harvested before the great heat. . The main push technology 1. Early land preparation and field preparation: Choose a field that is sheltered from the sun, flat terrain, less weeds, and convenient irrigation and drainage. According to the standard soil preparation of “smoothing, smashing and picking up the netâ€, the soil will be loosened and loosened, and the soil will be immersed in the ground to prevent bad seeding and ensure the emergence rate. 2. Seed Disinfection: Seeding seeds 1 to 2 times before seed soaking will facilitate ventilation and water absorption to enhance germination potential and improve germination uniformity. When soaking, use 500 times strong chlorine solution to soak seeds for 24 hours before sowing to eliminate diseases transmitted through seeds. 3. Spreading and sowing uniform seeding: The seeding volume of Putian is directly related to the nutrition space of the seedlings, and it is the key to affect the seedlings' weakness. Diluted seed sowing can breed with strong and strong, is conducive to the formation of early-onset high-yield groups. Generally, 10 kg of hybrid rice is planted and 30-40 kg of conventional rice are planted according to the amount of seed used. 4. Plastic film mulching: Compared with exposed mulch, mulching can be improved by 2~5°C in sunny days and 1～2°C in rainy days, which is very helpful for early spring low temperature culturing, and can reduce fertilizer loss and improve fertility. After covering the film to check whether the "paste plaster"; to prevent the wind to lift the film, timely repair film to prevent rotting; to stage film removal ventilation practice seedlings, especially in the event of high temperatures during the day to open the tail of the membrane for ventilation cooling seedling. 5. Cultivate dwarfism: It is mainly in the leaf-filling period, through the spraying of paclobutrazol or the application of a strong agent to control dwarfing and increasing larvae. The spraying period is a leaf-wrapped period, rather early rather than later; spray volume is 200 jins of Mushi liquid, rather not less; the liquid concentration is 300ppm; the field water should be drained when sprayed, 24 hours after spraying Rehydration to the seesaw. 6. Weed removal: In order to prevent weeds and seedlings from competing for fat, contend for light and fight for space. In the seedling leaf two-leaf heart period, 40 grams of Lelomonium mixed with Sasha or 75 ~ 100ml butachlor spray. 7. Apply four fertilizers: According to the growth characteristics of the seedlings, apply base fertilizers, sterilize the weaning fertilizers, attack the strong seedling fertilizers, and skillfully apply the marrying manure. On the basis of applying basal fertilizer, one-leaf and one-hearted plants are suitable to apply nitrogen fertilizer and supply nutrients in time to make the seedlings grow thick and strong. The strong seedlings are applied at the four-leaf stage to increase the rooting power and resilience of the seedlings. The first 4 to 5 days topdressing a quick-acting nitrogen fertilizer "starting to send marriage fat." 8. Insist on moist seedlings: grasp the buds without water, promote timely rooting; one leaf and one heart irrigation with shallow water to raise leeches; two leaves drown the legs; after the three-leaf stage, irrigating the water surface, mainly shallow water layer, and sometimes dry Dew "earth beads" to promote the delivery, the cultivation of trident, but to prevent the banned knot, affecting pull out pods; case of cold should pay attention to irrigation deep water, sunny and warm gradually drainage. 9. Do a good job of pest control: focus on the prevention and control of rice thrips, rice leaf mites, seedling mites, cotton rot disease, should be diligently check the report, timely and effective drug prevention and control. 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