亚马逊古老大陆的先民们知晓如何让脆弱的土壤保持肥力————这可能在不经意中发现一种应对眼前的气候变化的方法。
The ancient inhabitants of Amazonia knew how to keep fragile soils fertile—and may have hit upon a way to combat present-day climate change. That technique?
对近几年淮北小麦生产现状的分析表明，小麦品种使用不当、不良气候、土壤肥力偏低以及栽培粗放是当前淮北小麦大面积生产存在的主要问题。
In Huaibei area the unsuitable application of wheat variety, bad climate soil conditions, lower fertility and extensive cultivation were major limiting factors for high wheat yield in large areas.
红小豆的密度与土壤肥力的高低、年际气候条件和播期等因素有关。
The growing density of red bean is influenced with various factors such as fertility of soil, annual climate condition and sowing time.
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