Little or excessive nitrogen fertilizer application decreased roots vigor and protection enzyme activity and reduced growth and physiology superiorities of dry seedbed seedlings.
较少或过多施用氮素降低了秧苗根系活力和保护酶活性，影响秧苗生长和生理优势。
Under adversity, turfgrass adapt to environment by change extraneous shape, osmoregulation, dehydrate protection , change membrane, increase enzyme activity and so on.
逆境胁迫下，草坪草通过改变自身外部形态、渗透调节、脱水保护、改变膜透性、增加酶活性等多种途径适应外界环境。
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