1) water-saving irrigation by catchment
集水节灌
1.
Effects of water-saving irrigation by catchment on capsicum in greenhouse on dryland;
山旱地日光温室辣椒集水节灌试验研究
2) Rain harvesting and water-saving irrigation
集雨节水补灌
3) rainwater-harvesting and water-saving irrigation
集雨节灌
1.
Developing rainwater-harvesting and water-saving irrigation to deepen water conservancy for enriching farmers--enlightenment from investigating the rainwater-harvesting projects in Gansu Province;
发展集雨节灌 深化水利富民──考察甘肃发展集雨工程的几点启示
4) saving water irrigation
节水灌溉
1.
Present situation and countermeasures of developing saving water irrigation in canal irrigated region;
渠灌类型区节水灌溉发展的现状及对策
2.
Optimization design on technique project for saving water irrigation;
节水灌溉技术方案的优化设计
3.
Saving water irrigation is the base that promotes agricultural sustainable development and carries out agricultural high-yield high-efficience-high quality and low cost.
节水灌溉是促进农业可持续发展,实现农业"两高一优一低"的基础。
5) Water saving Irrigation
节水灌溉
1.
Review on scaling analysis approaches for agricultural water saving irrigation;
农业节水灌溉尺度分析方法研究进展
2.
Leaf-air temperature difference of rice and water deficit diagnose under water saving irrigation;
节水灌溉条件下水稻叶气温差变化规律与水分亏缺诊断试验研究
3.
Discussion on the function and route of water saving irrigation in Xinjiang;
试论新疆发展节水灌溉的作用与途径
6) Water-saving irrigation
节水灌溉
1.
Theory of water-saving irrigation and controlled drainage and the impact on farmland ecological environment;
节水灌溉与控制排水理论及其农田生态效应研究
2.
Countermeasures and effect of water-saving irrigation in establishment of new social countryside;
节水灌溉在社会主义新农村建设中的作用及其发展对策
3.
Discussions of problems concerning management of water-saving irrigation projects;
关于强化节水灌溉工程管理若干问题的探讨
补充资料:地下水集水构筑物
地下水集水构筑物
groundwater collecting structure
d*x旧shui Jishu一gouzhuwu地T水集水构筑物(groundwater eolleetingstruct盯e)为地下水开采构筑的从含水层中采取地下水的设施。地下水集水构筑物分垂直和水平两类。垂直集水构筑物有管井、大口井等一水平集水构筑物有渗渠。也有二者结合使用的集水构筑物,如辐射井。 管井采用较多的地下水垂直集水构筑物。用钻机钻入含水层下套管和过滤器(见管井施工)成井。它适用于埋藏较深、厚度较大的含水层。井管材料一般采用钢管、铸铁管、混凝土管或塑料管等。井的直径和探度根据水文地质条件和井的出水量等因素确定。通常井的直径在。.sm以内,井的深度在几十米至几百米不等。井管由井壁管、过滤器和沉淀管组成。井壁管下泵部位的内径至少比抽水泵吸水设备的外径大0.05m。过滤器外径按允许入管流速复核,其计算公式为: 。、Q D派-一生二二 一一冗乙nVg式中D为过滤器外径,m;Q为设计出水量,m“/s;L为过滤器工作部分长度,m;n为过滤器表面有效孔隙率;V:为允许入管流速,m/s。过滤器类型可根据含水层的性质选用(见表)。 填砾过滤器的填砾规格可按下列规定确定:(l)砂类含水层,DS。=(6一8)ds。;(2)砾类土含水层,当dZ。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条