关键词:龙牙椒木;不同生境;肥料处理;生长 [gap=758]Key words: Aralia elata; different ecological environment; different fertilizer; growth
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Naturally, species differ in different ecological environment.
生态环境不同，物种自然存在差异。
Parasites communitiy survey of scattered chicken in different ecological environment of Yu- lin Shows there are 6 species enboroa and 8 species ectoroa.
对榆林市不同生态环境下散养鸡的寄生虫进行比较详细的调查。
The characteristic of soil ciliates in different ecological environment as well as the application of it in the soil ecological environment evaluation is reviewed in detail.
介绍了土壤纤毛虫的研究历史；综述了国内外土壤纤毛虫在不同生境下的特性及其在土壤生态环境评价中的应用研究现状。
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