It was proposed that comprehensive index of regional environmental risk consists of the danger index of risk source, validity index of control mechanism and vulnerability index of risk receptor.

文章依据风险系统理论，构建区域环境风险区划的层次结构模型与指标体系，提出区域环境风险综合指数由风险源危险性指数、控制机制有效性指数、受体易损性指数组成。

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The super parent of hybrid rice should exhibit a comprehensive excellent performance, with the yield or sink capacity equal to the hybrid rice control in regional yield trial.

超级亲本要求综合性状优良，产量水平或库容量达到或基本达到各级区试对照杂交稻组合的水平。

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Regional land use control was an important content of comprehensive land use planning.

土地利用区域调控是土地利用总体规划的重要内容。

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