补充灌溉 meaning in English

su lementary irrigation
supplementary irrigation

Relations between corn yield and rainfall and optimal irrigation date in north shaanxi and weibei plateau
渭北玉米降水产量关系与最佳补充灌溉时期初步研究
Two aspects of the problem are discussed : one is that lift irrigation is no need when abstraction volume capability of canal head can meet the demand ; the other is that lift irrigation is in need when abstraction volume capability of canal head can not meet the demand
它包括两个方面：一是当渠首可引水量能满足灌区灌溉用水量时，则不需要提水灌溉；二是当渠首可引水量尚不能满足灌区灌溉用水量时，则需提水灌溉来补充灌溉用水量。