秸秆覆盖与遮荫对生姜生长及理化特性的影响 关键词 生姜 秸秆覆盖与遮荫 理化特性 [gap=726]Key words Ginger，Mulch and shade，Physiological and biological characteristics
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The biological characteristics of Triploid crucian carp and Triploid common carp have been studied detailedly by various methods on a basis of physiological ecology .
本文主要从生理生态学的角度采用多种方法较详尽地研究了湘云鲫和湘云鲤的多个生物学特征。
The chemical and biological characteristics of tannin are described, and its physiological activities and the researches concerned are reviewed.
阐释了单宁的化学和生物学特性，并对其生理活性及研究情况作一综述。
The effects of magnetic treatment on the biological qualities of water and on the physiological characteristics of aquatics, are described.
阐述了磁化处理对水体的生物性质、水中生物的生理特性的影响，以及由此所呈现出来的不同的生物效应。
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