Rice throwing cultivation is the main mode of rice cultivation in our city, with high yield, stable yield, labor saving, and provincial ownership. Its breeding method is to adopt plastic floppy disk breeding technology. Now we introduce plastic tray seedling sowing technology as follows: 1. Putian field selection and cultivation of fertilizer should be selected fields with flat surface, convenient drainage and irrigation, fertile soil, and green manure and vegetables are suitable. . The area of ​​Putian is enough to stay at a ratio of 1:33 in Datian, which means 20 acres per mu. Putian fertilizer should be as early as possible, the amount of fertilizer for each 20? Putian with rice fertilizer or compound fertilizer 12 to 13 kilograms, can also be used ammonium bicarbonate, potassium fertilizer 6 kilograms plus phosphate fertilizer 7 kilograms, poor fertility should be added Manure 1 ~ 2 Tam, ploughing 2 to 3 times after application, so that the soil is finely crushed and the soil is mixed. Combined with ploughing to remove grassroots, residue and other impurities. Second, the seed preparation and processing in accordance with the requirements of 5 kg of seeds per acre field preparation of sufficient rice seed. Before seeding, do a good job of seed treatment, mainly drying seed, seed selection and pesticide soaking. Shaizhong: Generally, the seeds are sun-dried for 1 to 2 days in good weather to enhance seed vigor and increase germination rate. Seed selection: In the selection of salt water or mud based on wind filtration and screening, no matter which method is adopted, the specific gravity of the solution is controlled between 1.1 and 1.2. It can be measured with a pycnometer or with fresh eggs. In salt water, the specific gravity is determined based on the size of the five-cent coin on the floating surface. By selecting seeds, we can eliminate empty grains, insect grains, diseased grains, rice grains, impurities, and branches and branches attached to rice, thereby improving the plumpness and uniformity of the seeds. After the solution is selected, it should be washed with water. Disinfection and soaking of pesticides: Soaking rice seedlings with 2 kg of 2 ml of water and 5 kg of immersed rice seeds with 3 to 4 kg for 36 to 48 hours can effectively prevent diseases such as rice bakanae disease spreading through seeds. After disinfecting and soaking, if the rice seeds do not absorb enough water, the exchangeable fresh water will continue to be soaked. After the rice seeds have enough water to absorb, they will take a thin stand for broadcast. The external feature of the rice seed to attract enough moisture is that the chaff is transparent, and the abdomen is white and the embryo is visible. Third, the fascia board production and shop plate first dry to do the fascia board, that is, according to the net fascia board 1.4~1.5m, the ditch width 20~25?, deep 20? requirements made into the fascia board; followed by the whole day in the afternoon before sowing Fine soil, leveling the screech board, compacting the sampan board with a board, pouring the water twice in two consecutive stages, and pouring some water on the sowing day to make the sampan plate 5 土 soil layer saturated with moisture; The plastic sampan plate and the stencil are lightly pressed with the wood board so that the sampan plate bottom is close to the sampan plate surface. When the plate is spread, the plate and the plate do not overlap and the plate surface must be flat. In the dry season, at the same time as the dry board, according to every 60 plastic plates (size 561 holes) prepare 100 kg of sifting fine soil, and into the woven bag, covered with a film, to avoid rain wet caking so that when used for sowing . Fourth, sowing time and method of sowing time vary according to the way of childbirth. General plastic trays for dry cultivation, due to the relatively slow growth of seedling shoots, sowing time is appropriate in early May, no later than May 15th, the age of control in 30 to 35 days; while the plastic tray wet seedling sowing time should be It is postponed to May 15-20 and it is advisable to stay in the age of 20-25 days. Drying seedlings on plastic trays are sown in the following procedures: (1) On the well-laid trays, a small amount of fine soil is mixed with the rice bran-strengthening agent 1 and sprinkled on the bottom of the pan, and then sprinkled with spare fine soil to the height of the pan holes. Two-thirds, and use the broom to remove the disk surface soil; (2) The next kind, you can use the rice seedlings precision seeder sowing can also be directly broadcast by hand, grasping in each hole broadcast 3-4 rice, try to reduce the porosity (3) After the seeds are planted, cover the seeds with the fine soil, and use the broom to remove the excess soil from the disk; (4) Cover a layer of wheat straw or straw with water and wet the cover grass with water; (5) Cover with a flat film; Use bricks, etc. to hold the film in the trench. In terms of wet trays for plastic trays, dry soaked sheets are made before sowing, then soaked in water soaked in water, soaked and drained into half-gutter water. Then the flat plates are laid and the trays are laid. It is the same as the requirements for dry seedlings, starting from the spread and covering the grass. The last irrigation water to the ditch, in the ditch water surface is not more than plastic disk surface is appropriate, as soon as possible wet soil, can also be used to spray wet grass cover wet grass to achieve the purpose of soil.