The results in this study recommed that the length and gradient of the slope should be considered in the soil nutrients management on sloping land.

因此，在坡地土壤养分调控中必须综合考虑坡度和坡长因素。

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An investigation of nutrients management on mulberry was carried out including 44 mulberry orchards distributed in main product area in Hubei province.

对湖北省蚕桑主产区44个有代表性的桑园养分管理现状进行了调查。

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In Africa, where many soils have become badly depleted of nutrients, better fertiliser management would go a long way.

在非洲，有大量的土地已经耗尽了养分，因而更需要长期经过良好管理的施肥。

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The film highlights key water quality problems such as lack of access to safe water and sanitation, inefficient wastewater management in urban areas, water pollution caused by intensive use of nutrients and chemicals in agriculture, the invisible threat of new and emerging pollutants in water and the economic costs of water quality degradation.

UNESCO: MEDIA SERVICES