Sawning before sowing can effectively increase the germination rate and germination potential of seeds. The main reasons are: 1. Sowing seeds can promote the ripening of seeds and increase the activity of enzymes. After the rice seeds are harvested, they will enter the warehouse after being sun dried and dried. However, due to the differences in maturity and dryness, the humidity and temperature of the air during storage will also change. If the seeds absorb moisture, the respiration will be strong and the nutrients in the seeds will be consumed. More often than not, the germination ability of the seed is weakened and the germination potential is reduced. After drying, the passivity of the seed coat can be enhanced, so that the water can be uniformly absorbed during the soaking and the activity of the enzyme can be enhanced. 2. Sowing seeds can promote oxygen into seeds. The germination of seeds requires free oxygen. Oxygen is the primary condition for the formation of gibberellins from embryos or the conversion of gibberellins in the binding state to free gibberellins. The formation of a-amylase catalyzes the degradation of starch into soluble sugars for the respiration of embryos and the formation of new cells from young roots and shoots. 3, Shaizhong can reduce the concentration of amines A in the hull, the amine in the hull B, the acid from the lamina and the vanillic acid and other substances. When the concentration of these substances is high, it can inhibit the germination. 4. Short-wave light in the solar spectrum, such as ultraviolet light, has bactericidal capacity, so the sun has a certain bactericidal effect. The method of drying the seeds: Spread the seeds thinly on the drying pad or on the concrete floor, dry for 1-2 days, diligently turn, so that the seed dry consistency.
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