irrigation requirement meaning in Chinese
灌溉定额
灌溉需水量
灌溉需水总量
灌溉需要量
灌水定额
Examples
- Compared with coupling fitness of water requirement to rainfall , crop ' s water requirement and irrigation requirement show the contrary trend
表明在当地自然资源环境和节水灌溉背景下，不宜过多种植秋播粮食作物，应以春夏播作物为主。 - Abstract : the irrigation requirement and the available groundwater resources in the development area were assessed comprehensively . it was concluded that the groundwater resources in the area is sustainable
文摘:对双丰农业综合开发区的灌溉用水量和地下水可开采量进行了综合评价，指出本开发区地下水资源可以持续开发利用。 - The first part is about the computing of crop water requirements ( or crop evapotranspiration ) and net irrigation requirements ( nir ) of ten crops in bojili irrigated district . then the traditional irrigation schedules of winter wheat and summer maize , which are the main crops in bojili , were evaluated with simulating model isareg . third , the field application efficiency in the experimental areas was evaluated from three methods
本文即是由灌区实测资料计算各种作物需水量，推求其净灌溉需水量；然后通过模型检验现行作物灌溉制度是否具有合理性，并对田间灌溉系统进行评价，求其实际田间灌溉效率；最后由两种不同灌溉制度方案的对比，确定试区合理的作物灌溉制度，在此基础上求出各代表年的田间灌溉需水量和用水过程线。 - In the fourth part , the field irrigated water requirement were gotten based on the recommended irrigation schedules and irrigated areas often crops . in this paper , the reference evapotranspition et0 in three counties in bid was computed by penman - monteith method and the crop coefficients , kc of ten crops by kcisa model and the crop water requirements , etc , were computed simply by kc et0 . meanwhile , four representative years by frequency analysis are gotten according to net irrigation requirements and planted areas of different crops in bojili irrigation district
本文首先采用fao最新推荐的penman - monteith方法计算灌区的参照腾发量et _ 0 ，用kcisa按照fao的计算方法推求十种作物的作物系数k _ c ；由此基础上计算出作物需水量et _ c ，根据结果分析了不同作物的需水规律；同时用作物缺水量nir (净灌溉需水量)进行频率计算，求出了灌区的四个代表年，并分析了代表年年内自然水分状况和作物缺水规律。