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- soil ecological problem 土壤生态问题
- The Karst rocky desertification becomes the third ecological problem of our country after the desertification in northwestern area and the soil erosion in the loessial area. 岩溶石漠化成为继西北地区沙漠化和黄土地区水土流失之后的我国第三大生态问题。
- Soil erosion is the most serious ecological problem in the world, and it is more serious in the regions of expansive soils than other regions. 水土流失是全球最大的生态环境问题,膨胀土地区工程建设所造成的水土流失更为严重。
- However, the study on the application of springtail in soil ecological risk assessment is very limited. 目前跳虫在土壤生态风险评价中的应用研究尚处于起步阶段。
- Forest entomologists have concentrated on ecological problems. 森林昆虫学家所重视的是生态问题。
- Invasion of Spartina grass has induced significant decline of the soil ecological properties of the wetlands. 米草入侵后土壤的各项养分指标均有明显下降,湿地土壤生态化学性质发生了明显的退化。
- With the world抯 rapid prosperity,the globality of ecological problem stands out more severe now. 世界各方面的迅速发展,使生态安全问题全球性更加突出。
- The cause of black soil ecological system frangibility was interacted by natural and artificial factors. 黑土生态系统脆弱性成因自然因素和人为因素共同作用的结果;
- Sandy desertification is the main ecological problem the Otindag Sandy Land at present. 沙漠化是浑善达克沙地面临的主要环境问题。
- And a series diagnostic indices identifying the soil ecological fertility and its cultivation measures are put forward as well in this paper. 在此基础上,提出了表征土壤生态肥力的一套诊断指标和有关土壤生态肥力的培育措施。
- Continuous pump drainage of water in coal mine results in the desiccation of soil and therefore the related ecological problems. 矿井水强烈持续抽排,导致土壤趋于干化并产生相应的生态环境问题。
- Especially in the near decades, these reasons result in a series of ecological problems, such as pasture retrogression, vegetation sparsity, soil erosion and dust devil. 特别是近几十年来,农牧交错区因开垦草地、过度放牧,造成草地退化、植被稀疏、土地沙化、水土流失、沙尘风暴等一系列严重的生态问题。
- Effect of different tillage methods on rice growth and soil ecology. 不同耕作方法对水稻生长和土壤生态的影响。
- Sewage itself is another major contaminant of water that can cause ecological problems and such human diseases as cholera and dysentery. 污水是引起水体污染的另一个重要因素,它会导致一些生态问题,使人引发霍乱和疟疾。
- The serious ecological problems such as germ storeroom degradation,minus rising of area soil layer,soil erosion and rock desertification have appeared due to the mutual affection... 针对这些问题,建议采取控制人口、恢复植被、加强能源建设和发展生态农业等一系列措施。
- This paper discusses the ecological problems of uranium mining, particularly in-situ leaching (ISL) mines. 讨论了铀矿业的生态问题,特别集中在地浸上。
- Sandstorm diffusion is one of the most serious ecological problems and is paid widely attention in the whole world. 风沙扩散以及由此引起的生态环境灾害作为严重的生态环境问题受到世界的普遍关注。
- Field experiments were carried out to study the effects of drip irrigation under mulch film (DIUMF) on soil ecology environment and growth of cotton. 摘要通过田间试验研究了膜下滴灌对棉田生态环境状况及棉花生长发育及产量形成的影响。
- Since the urease activity in soil is close correlated with the growth of stem lump mustard and soil metabolism, which is a key indicator of soil ecology and soil fertility. 土壤脲酶活性高低反映出茎瘤芥生长和土壤代谢状况,可作为茎瘤芥土壤生态和肥力水平的一个良好指标。
- High effective utilization and development of wood charcoal has positive effects on solving environmental and ecological problems as well as the problem of residuals recover as resource. 木质炭化物的高效开发利用,对解决废弃物资源化、环保、生态环境等问题将起到十分积极的作用。