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为探讨壮禾增浸种培育壮秧的生理机制 ,本文比较了用壮禾增浸种和用清水浸种对水稻种子生理特性、萌发和成苗等方面的差异以及这些差异在秧苗素质上的反映 ,分析了浸种时间对种子活力的影响。结果表明 ,用壮禾增浸种适宜时间可提高种子活力指数 (SVI) 6 .1%～ 16 .3% ,田间播种成苗率提高 5 .3% ,种子脱氢酶活性和淀粉活性显著增强 ,分别提高12 .4%和 13.2 % ,呼吸强度增加 9.9% ,种子生根出芽所需营养底物的供给得以加强 ,而且种子生活力的提高有助于秧苗的生长 ,秧苗根系发达 ,且抑制顶端优势 ,促进横向生长 ,分蘖发生早而快 ,叶片叶绿素含量高 ,光合物质积累多 ,秧苗综合素质提高。
In order to explore the physiological mechanism of Zhuanghezeng soaking seedling, we compared the differences of physiological characteristics, germination and seedling of rice seedlings with soaking and soaking seedling with Zhuanghezeng and their differences in seedling quality The effect of seed soaking time on seed vigor. The results showed that seed germination rate (SVI) increased from 6.1% to 16.3% with seedling rate increased by 5.3% in seedling stage, and seed dehydrogenase activity and starch activity were significantly increased by soaking seedlings with Zhuanghezao, Increased by 12.4% and 13.2%, respiration intensity increased by 9.9% respectively. The supply of nutrient substrate needed for seed germination was enhanced, and the improvement of seed viability contributed to the growth of seedlings, the developed root system of seedlings and the suppression of the top advantage , Promote horizontal growth, early and fast tillering, high leaf chlorophyll content, accumulation of photosynthetic substances, and improvement of comprehensive quality of seedlings.