某区农业水土环境系统的状态可由人类农事活动对农业水土环境要素及其构成类型的进占程度描述。
A given district's system condition may be expressed as taking degree of mankind's farming behavior extent to the key element the agricultural water and soil environment.
介绍了农业水土工程学科信息管理系统(asweis)的设计原则及系统的结构、功能、特点和运行环境。
The design principles, system structures, system functions, system characteristics and operation environments of Agricultural Soil Water Engineering Information system (ASWEIS) have been introduced.
以实地考察材料为基础，分析了兴山县农业生态环境的两大问题——水土流失和土壤质量差。
Based on the data of field investigation, two significant agricultural eco environment issues, soil erosion and poor soil quality, in Xingshan county, Hubei province were analyzed.
我国黄土高原为治理水土流失、改善农业生态环境修建了大面积的梯田。
For combating soil and water loss and improving agricultural bio environment, a large scale terraces have been built in the loess plateau in China.
水土流失是当地生态环境恶化，农业生产落后的主要原因。
Soil erosion is the main cause of the degradation of local environment and backwardness in agricultural production.
长江流域水环境问题是由多种因素引起的，如工农业污染、城市生活污染、水土流失等。
Water environment problems of Yangtze valley are caused by many factors, such as industry and agriculture pollution, city consumer pollution, soil and water loss etc.
生态农业建设使农业生态环境得到明显改善，荒山荒坡得到治理，森林覆盖率大幅度提高，水土流失有所控制。
The practice of eco-agriculture has brought about striking improvements in the environment for the industry—barren hills greened, forest acreage greatly raised, soil erosion controlled to some extent.
研究还发现，有机农业还能带来极大的环境效益，比如提高土壤的肥力、更好地保持水土、防止干旱。
It also found strong environmental benefits such as improved soil fertility, better retention of water and resistance to drought.
嘉陵江流域水土流失日趋严重，已成为农业生态环境最突出的问题。
The situation of water and soil loss in Jialing River catchment is becoming a vital problem of agri-ecology.
严重的水土流失不但可以导致生态环境恶化，而且对地表土层的破坏，会使土地的生产能力下降，影响农业生产。
The water and soil loss not only bring on entironment worsement, but also reduced the capacity of ground yield by destroy surface layer of soil.
严重的水土流失不但可以导致生态环境恶化，而且对地表土层的破坏，会使土地的生产能力下降，影响农业生产。
The water and soil loss not only bring on entironment worsement, but also reduced the capacity of ground yield by destroy surface layer of soil.
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