(1) Choose a seedbed. It is close to Datian, with good irrigation and drainage conditions, convenient transportation, and a dry land with a flat terrain. The ratio of seedbed to field is 1:80-100. For example, using a smart greenhouse, multi-layer truss breeding, the ratio of seedbed to Datian can reach 1:200. If rice fields are used as seedbeds, inorganic fertilizers and organic fertilizers should be used to fertilize the soil. For early rice and reclaimed rice, the seedlings can be kept in the middle shed or small arch shed.
(2) Prepare nursery nutrients. The nursery and nutrient soil must be prepared well enough. The early rice is prepared for about 125 kilograms per mu (medium rice is 100 kilograms) (about 1500 kilograms on one side and about 400 trays). Choose loam that is loose and fertile, free of debris, no gravel, no weeds, and no pollution. When the water is suitable, it is transported into the warehouse. After drying and drying, add 1~2% organic fertilizer, crush and use. Before planting, the seedling bottom soil is added with 0.7 kg of high-quality sturdy sputum per 100 kg. It is mixed and used now. The cover soil can not be mixed with strong sputum. The nutrient soil is well-fertilized before winter and avoid fertilization before planting. For rice substrate seedlings, you can purchase qualified rice seedlings for sale in the market, and replace nutrient soil seedlings according to their technical instructions, which is environmentally friendly and reduces work intensity.
(3) Select the variety and prepare for the plate. Choose high-quality, high-yield, lodging-resistant varieties, early rice such as Liangyou 287, Ezao 17; Zhongdao Rufeng Liangyouxiang 1, Guangliangyou 96, Xinliangyou 223. Conventional early rice is prepared with 30 pieces of hard (soft) plate per acre of field, with a seed amount of 4.0 kg. The hybrid early rice is prepared with 25 pieces of hard (soft) plate per acre of field, with a seed amount of 2.75 kg; medium rice is prepared hard per acre of field ( 20 soft) trays, 1.5 kg of hybrid mid-season seeds.
(4) soaking seeds to disinfect and germination. Seeds are soaked for 1 to 2 days before soaking seeds, and soaking seeds such as "School" can prevent diseases such as mite and blight. Conventional early rice seeds are generally soaked for 24 to 36 hours, hybrid early rice seeds are generally soaked for 24 hours, and hybrid mid-season seeds are generally soaked for about 10 hours. The seeds are placed in a fully automatic rice seed germination machine or a germination barrel to promote germination. The temperature is regulated at 35 degrees. Generally, the chest can be broken after 12 hours. After the chest is broken, the seeds are spread on the tarpaulin for 6 to 12 hours, and the water is dried. To be used for sowing.
(5) Fine seeding. Adopt mechanical sowing, firstly carry out seeding and debugging, so that the thickness of the bottom soil in the tray is 2~2.2 cm; adjust the amount of watering so that there is no water on the surface of the subsoil, no dripping water at the bottom of the tray, and it can wet the bed soil after sowing the soil; adjust the seeding amount Conventional early rice is 150 grams per dry seed, 100 grams of dry rice per well, and 75 grams of dry rice in the middle of the hybrid rice. Early rice is usually planted on March 15. Artificial sowing is used. Generally, it is planted on March 20-25, and the groundwater of the seedbed is poured through the day before planting. Make sure the foot is out of order. The floppy disk is flat, solid, straight and tight. Sowing evenly: first put the subsoil mixed with the strong sputum into a floppy disk, thick 2 ~ 2.5 cm, spray the water and then sow. The amount of seeding is the same as the amount of mechanical seeding. Weighed by the number of discs, weighed in several times, and strive to be uniform. After the sowing, use 2 grams of enkesone to water 1 kg spray disinfection per square meter, and then cover the seed soil, about 3 to 5 mm thick, so that no buds are suitable. The topsoil is moistened, and the double film covers the moisturizing and warming.
(6) Seedling management. 1Insulation and emergence: The seedlings are covered with a film before the seedlings, and the high temperature and high humidity are used to promote the seedlings. In case of heavy rain, the fields should be drained in time. 2 ventilation and refining: one leaf and one heart open in two sunny days, and then cover it in the evening. After 1~2 days, the nighttime cover can be used to refine the seedlings on the sunny day, and gradually increase the ventilation volume. The two leaves are all-weather ventilation, cooling and refining The temperature is preferably 20 to 25 ° C. When the rainy days open the window to refine the seedlings, the average daily temperature is lower than 12 °C, it is not suitable to uncover the film, and the rain cover film is rainproof. 3 disease prevention: after the seedlings spray a "transplanting spirit" to control the blight. 4 hydration: the soil does not whitish and does not replenish water to control the height of the seedlings. 5 Fertilization: Because of the short age, the seedbed is generally not topdressed, and the de-fertilized seedlings can be sprayed with 1% urea solution.
(7) Transplant at the right time. Due to the small elasticity of the seedlings, it is necessary to make seedlings such as fields, seedlings and other fields, and transplant them at the right time. The early rice is 20 to 25 days old, the middle rice is 15 to 17 days old, the leaf age is about 3 leaves, and the plant height is 15 to 20 centimeters. The seedlings are required to be seedlings, the seedlings are uniform, and the roots are formed into blankets. When transplanting, you can follow it, follow it, and plant it.
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