The management of poultry by-products focuses on soil, water and air quality issues.

家禽副产品的管理主要涉及土壤、水资源和空气质量问题。

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Paraffin is a known carcinogen, and hydrogen peroxide can harm the digestive system. Chopsticks irresponsibly disposed of can contaminate water and soil quality.

石蜡是一种已知的致癌物，而过氧化氢则对消化系统有害。随意丢弃木筷则可能污染水和土壤质量。

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"Understanding the amount of pollutants in soil and snow is critical to maintaining the quality of alpine water sources," the scientists report.

科学家们研究声称，“了解土壤和积雪中的污染物的量对维持高山融水的质量有重要的作用。”

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Trees can also improve water quality around farms by removing pollutants from soil and groundwater.

VOA: special.2009.09.08

Farmers plant a warm-season perennial grass and fallow the field for two years, improving soil quality and water-holding capacity.

FORBES: New Technology Reduces Agricultural Water Consumption

The scheme is an agri-environment scheme, which provides funding for farmers to manage their land in a way designed to benefit biodiversity and landscape features and improve the quality of water and soil.

BBC: Environment and Sustainability Committee

The adoption of herbicide-resistant crops could help improve water and soil quality by reducing the need for tilling.

FORBES: Magazine Article