Favorate soil fertility could improve the process of vegetation naturalization.
土壤养分条件改善促进植被的天然化。
参考来源 - 黄土高原刺槐人工林生长特征及其天然化程度评价The whole soil fertility was relatively medium in wheat field due to medium to richness level of N,medium level of P and richness level of K,absence of trance element such as Zn,B and Mo and unbalanced of nutrient ratio.
2.小麦立地土壤有机质不足,氮素处于中等水平,磷素为中等水平,钾素处于丰富水平,微量元素锌、硼、钼缺乏,营养元素比例失调,整体肥力水平中等。
参考来源 - 青海省湟源县农田土壤肥力特性与作物配方施肥技术研究So accelerating the leaf litter decomposition is an important way to avoid the fertility recession and keep the soil fertility.
所以加快雕落物的分解,是防止森林地力衰退、维持土壤肥力的重要途径。
参考来源 - 四川岷江上游典型森林生态系统凋落叶分解及其与土壤性质的互动·2,447,543篇论文数据，部分数据来源于NoteExpress
Moreover, some have been found to have a valuable function in building up soil fertility.
此外，已经发现一些在提高土壤肥力方面有重要作用。
Natural soil fertility is dropping in many areas because of continuous industrial fertiliser and pesticide use, while the growth of algae is increasing in lakes because of the fertiliser run-off.
在很多地区，由于工业化肥和农药的持续使用，导致自然土壤的肥力正在下降，然而化肥的流入却导致湖泊中藻类生长得越来越快。
According to Kramer, Haiti's problem isn't lack of soil fertility, but lack of soil itself.
据克雷默说，海地的问题不在于土壤贫瘠，而在于缺少土壤。
Farmers lack enough inputs to maintain soil fertility is parts of many developing countries, especially in Africa south of the Sahara.
VOA: special.2009.07.28
He says it is true that such crops can have higher output with less cost,but added: No one knows the consequences that will have on soil fertility and the human body.
VOA: special.2010.05.18
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