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1.晒种:稻种在播种前2～3天进行晾晒,既可增强种皮的透性和淀粉酶的活性,使淀粉分解为可溶性糖,用来供给胚呼吸和形成幼根、幼芽的新细胞,同时又可使种子干燥一致,吸水均匀,出芽整齐。据试验结果证明,晒种可提高种子发芽率5%和发芽势10%左右。 2.选种:水稻种子的成熟度与其发芽能力有密切关系。稻谷成熟好的发芽率高;反之,发芽率低,幼苗发育也较差。同
1. Sun species: rice species 2 to 3 days before sowing to dry, can enhance the permeability of seed coat and amylase activity, the starch is decomposed into soluble sugar, used to supply embryonic respiration and the formation of young roots, sprouts Of the new cells, but also make the seeds dry and uniform, uniform water, budding tidy. According to the test results show that sunburn can increase seed germination rate of 5% and germination potential of about 10%. 2. Seed selection: The maturity of rice seeds is closely related to their ability to germinate. Paddy mature germination rate is high; the other hand, low germination rate, seedling development is also poor. with