(1) Choose a good seedbed. Select dry lands close to Datian, with good drainage and irrigation conditions, convenient transportation, and flat land as the seedbed. The ratio of seedbeds to Daejeon is 1:80 to 100. Such as the use of intelligent greenhouses, multi-layer truss seedlings, the ratio of seedbeds to Daejeon can reach 1:200. If rice fields are used as seedbeds, inorganic fertilizers and organic fertilizers should be used to fertilize the soil. Early rice and rice breeding can be cultivated in greenhouses or small sheds.
(2) Prepare nursery nutrition soil. The nursery nutrient soil must be sufficiently prepared before the year. The early rice is prepared for about 125 kilograms per mu (about 100 kilograms per hectare of rice) (about 1,500 kilogrammes for one side, about 400 sowing plates for broadcast). Choose loose and fertile soil, no residue, no gravel, no weeds, no pollution of loam. When the moisture is suitable, it will be transported into the warehouse, and after drying and drying, it will be added with 1 to 2% of organic fertilizer, and will be used after crushing. Before seeding, the seedling soil should be added with 0.7 kg of high-quality bran-strengthening agent per 100 kg. The mixture should be used immediately. The cover soil should not be mixed with strong turbulent agents. The nutrient soil should be fertilized before winter and should not be fertilized before sowing. Rice substrate nursery can be purchased on the market for qualified rice seedlings, and the replacement of nutritious soil seedlings according to the technical instructions will not only save the environment but also reduce the work intensity.
(3) Choose a good variety and prepare enough dishes. Select high-quality, high-yield, strong lodging-resistant varieties, such as early rice such as Liangyou 287, Hubei early morning 17, Zhongyou Rufengliangyou 1, Guangliangyou 96, Xinliangyou 223. The conventional early rice has 30 hard (soft) plates per mu of field, with a seed volume of 4.0 kg. The hybrid early rice has 25 hard (soft) plates per acre field, with a seed volume of 2.75 kilograms; There were 20 soft plates and 1.5 kg of hybrid medium rice seeds.
(4) soaking germination germination. Seeds are tanned for 1 or 2 days before seed soaking, and soaking the seeds with a chemical to prevent bastard disease, blight and other diseases. The seeds of conventional early rice are usually soaked for 24-36 hours, the hybrid early rice seeds are generally soaked for 24 hours, and the hybrid mid-season seeds are generally soaked for about 10 hours. The seeds are put into automatic rice seed germination machines or germination barrels to germinate, the temperature is controlled at 35 degrees, and after 12 hours, the chest can be broken. After the chest is broken, the seeds are spread on the tarpaulin and the sprouts are dried for 6 to 12 hours. To be sown.
(5) Fine sowing. Mechanical sowing, first sowing commissioning, so that the thickness of the end plate is 2 to 2.2 cm; adjust the amount of watering, so that there is no water on the surface of the subsoil, there is no dripping water on the bottom of the disc, after sowing the soil can be soaked bed soil; adjust the amount of sowing , Conventional early rice sowing 150 grams per dry valley, hybrid early rice sowing 100 grams per dry valley, hybrid rice, sowing each valley 75 grams, early rice generally start sowing on March 15. Artificial sowing is generally used to sow the seeds on March 20-25 and the bottom of the seedbed is drenched the day before sowing. Make sure your feet are neat and tidy. The floppy disk is flat, solid, straight and tight. Uniform sowing: Firstly mix the subsoil mixed with strong agent into the floppy disk, 2 to 2.5 cm thick, and then spray the water and sow. The sowing amount is the same as the mechanical sowing amount. Weighed by the number of trays, divided sowing, and strive to uniform. After sowing, 2 grams of Dixon was sprayed and sterilized with 1 kg of water and then covered with seed soil. The thickness was about 3 to 5 mm. To make the topsoil moist, double-film covering moisturizing and warming.
(6) Seedling management. 1 heat preservation seedlings: seedlings Qimiao before the good film, high temperature and humidity to promote Qimiao, in case of heavy rain to drain the field water. 2 ventilation and hardening seedlings: one leaf and one sunny open ventilation, cover it again in the evening, 1 to 2 days after the sunny day can be uncovered night cover refining seedlings, and gradually increase the ventilation, the two leaves all day ventilation, cooling and hardening seedlings The temperature of 20 ~ 25 °C is appropriate. When the average temperature is lower than 12°C, the film should not be uncovered on rainy days and the weather should be covered with rain. 3 Disease prevention: After the seedlings are sprayed, a "transplanting spirit" will prevent blight. 4 Replenishment: The disc soil is not whitened and no water is supplied to control the seedling height. 5 Fertilization: Due to the short age, the seedbed is generally not top-dressing, and the de-fertilizer seedlings may be sprayed with 1% urea solution.
(7) Transplanting at a proper time. Due to the low elasticity of machine-planting seedlings, field seedlings must be made, and seedlings must not be transplanted. Early rice 20 to 25 days old age, rice age 15 to 17 days is appropriate, leaf age of about 3 leaves, plant height 15 to 20 cm transplanting, seedling planting seedlings required Miao Qi, Miao uniform, root plate into a blanket. When you start transplanting and transplanting, do it with you.
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