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   土壤变化 在 畜牧与动物医学 分类中 的翻译结果: 查询用时:0.019秒
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土壤变化
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  “土壤变化”译为未确定词的双语例句
    The Changeful Research of Vegetation and Soil in the Process of Ecological Restoration on Sandification Rangeland of Dry Steppe
    干草原沙化草地生态恢复过程中植被与土壤变化研究
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    (2) Plant community and soil changed as the grazing pressure increased,but the vegetation change is quicker than that of the soil;
    (2)随着放牧梯度的变化,植被和土壤都发生了变化,中度退化草地植被变化大,而土壤变化不大;
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  soil transformation
Observed linkage of genetic markers was greater in soil transformation than in standard laboratory procedures.
      
Soil transformation of 2(3H)-benzoxazolone of rye into phytotoxic 2-amino-3H-phenoxazin-3-one
      
Soil transformation of wheat and corn metabolites mboa and DIM2BOA into aminophenoxazinones
      
The soil transformation is similar of that undergone by the rye metabolite 2(3H)-benzoxazolone (BOA) into 2-amino-3H-phenoxazin-3-one.
      
There also was no evidence that hay-scented fern natural products or their soil transformation products built up in the soil.
      
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In this paper, the laws of changes of plants and soil under different grazing intensities are studied. The results show as follows. High-intensity grazing applied over a period of three years induces comparatively big changes in the total nitrogen content of soil and in the composition and structure of the grassland. It causes the herbage yield to decrease by 17.1%,the importance value of the main species of the grassland, namely, red clover, to decrease by 33.8%, the coefficient of homogeneity of red clover...

In this paper, the laws of changes of plants and soil under different grazing intensities are studied. The results show as follows. High-intensity grazing applied over a period of three years induces comparatively big changes in the total nitrogen content of soil and in the composition and structure of the grassland. It causes the herbage yield to decrease by 17.1%,the importance value of the main species of the grassland, namely, red clover, to decrease by 33.8%, the coefficient of homogeneity of red clover to increase by 51.1%, and the nitrogen-phosphorus ratio of soil to increase by 1.3. Low-intensity grazing causes the total nitrogen content of soil to decrease by 0.096%, and the coefficient of homogeneity of red clover to increase by 21.0%. Moderate-intensity grazing does not cause the herbage yield and the importance value of red clover to decrease. Meantime it keeps the coefficient of homogeneity of red clover far below the 1.0 level but causes the total nitrogen content of soil to decrease by 0.085%. From the above results it can be concluded that moderate-intensity grazing is the best option of grazing management for keeping the sustained high production of the grassland.

对不同放牧强度下草地植物和土壤的变化规律进行了研究,结果表明:3年强度放牧使土壤的全氮含量和草地的组成和结构发生了较大的变化,使牧草产量下降17.1%,草地主要种红三叶的重要值降低了33.8%,均质度系数增加51.1%,土壤的氮磷比升高1.3。轻度放牧使草地全氮含量降低0.096%,红三叶的均质度系数增加21.0%。中度放牧并未使草地牧草产量和红三叶的重要值降低,同时使草地红三叶均质度系数保持在远低于1.0水平以下,但使土壤全氮含量下降0.085%。根据以上结果,中度放牧是保持草地持续高产的最好的放牧管理选择。

The plant community characteristics were measured with quadrat samples in Hulunbeier meadow steppe.The vegetation and soil data were used to divide the quantitative stage of degradation with systematic cluster analysis.The results showed as follows:(1) The degradation of meadow steppe can be divided into three stages:light degradation,moderate degradation and heavy degradation according to vegetation,and two stages:a little of light degradation and heavy degradation according to soil data;(2) Plant community...

The plant community characteristics were measured with quadrat samples in Hulunbeier meadow steppe.The vegetation and soil data were used to divide the quantitative stage of degradation with systematic cluster analysis.The results showed as follows:(1) The degradation of meadow steppe can be divided into three stages:light degradation,moderate degradation and heavy degradation according to vegetation,and two stages:a little of light degradation and heavy degradation according to soil data;(2) Plant community and soil changed as the grazing pressure increased,but the vegetation change is quicker than that of the soil;(3) All the degradation stages are located in one range site.Therefore,the degradation is mainly caused by the grazing disturbance.

采用样方取样方法实地调查内蒙古呼伦贝尔草甸草原的植物群落特征,利用植被和土壤数据,应用系统聚类分析方法对其草地退化等级进行定量划分.结果表明:(1)植被指标聚类可将草地划分为3个等级,即轻度退化、中度退化和重度退化草地,而利用土壤指标聚类则划分为2个等级,其中轻度退化和中度退化草地的土壤状况相似合为一个等级,重度退化草地为另一个等级;(2)随着放牧梯度的变化,植被和土壤都发生了变化,中度退化草地植被变化大,而土壤变化不大;(3)内蒙古呼伦贝尔草甸草原为同一草地利用单元,所划分的草地退化等级系列是由放牧引起的.

 
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