Seed treatment before rice sowing is an important part of the rice production process, and it directly affects the entire rice production process. Recently, some readers called the newspaper and asked how they should be treated before sowing. To this end, the reporter interviewed the provincial plant protection station deputy chief agronomist Bao Wenxin researcher. Bao Wenxin told reporters that the rice seeds of the previous year were dormant after harvesting, and that seed drying, seed soaking, and seed dressing were dealt with one week before sowing, which could break the dormancy of seeds and increase their vitality. The germination rate and germination potential of the seeds facilitate germination and neatness. Shai-seed rice should be sun-treated before soaking and germination, which can enhance the permeability of the seed coat, stimulate the energetic activity of the enzyme, and facilitate the cultivation of the strong and prosperous. At the same time, the bacteria attached to the surface of the seed can be killed and the disease transmitted by the seed can be reduced. The method of drying seeds is to spread the rice seeds thinly on the cement floor or in the drying field (when the temperature is too high, the seeds should not be directly exposed on the cement board). , Make the seed dryness consistent, after the sun to select seeds and pay attention to allow the seeds to dry more than 3 hours, so that the seeds after cooling and soaking. Farmers need to pay attention to the fact that they must be fine in their operations to prevent breakage of shells, breakage of grains, and miscellaneous varieties. The purpose of soaking soaking seeds is to make the rice seeds absorb water more quickly and achieve normal germination. The moisture content of dried seeds is usually below 15%, and physiological activity is very weak and they are dormant. After the seed absorbs water, the seed coat expands and softens, oxygen dissolved in the water enters the cell with the moisture, and the enzyme in the seed also starts to activate. Embryos gain moisture, energy, and nutrients. Under the right temperature and oxygen conditions, cells begin to split and elongate, breaking through the glume (germination). Bao Wenxin told reporters that 5 kg can be soaked with 25% of prochloraz EC or 4.2% of dithiocyano methane in 2 ml of water. In the soaking process, if the water is not enough, farmers can add more water. Early rice needs to be immersed for 48 hours, middle rice needs to be immersed for 36 hours, and late rice needs to be immersed for 24 hours. Seed dressing In order to prevent the harm of species transmission, conditional farmers can use 70% seeds to disperse imipenac (Fudie Rice Seed Dressing Agent) 2-4g, mix evenly into coating liquid, coat 1 The kilograms of rice seedlings are used to prepare seeds before germination. The seeds can be sown directly after drying. Farmers can also use 30% seed treatment suspension agent thiamethoxam (Ruisheng seed dressing agent) 3 ml watered 100 ml, can be seeded 1 kg.
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