黄淮海平原农田灌溉模式及其效益的研究—

李庆朝, 张二勋

A study on ways and benefit of farmland irrigation in plain of the Yellow river, Huai river and Sea river

LI Qing-chao, ZHANG Er-xun

地理研究 . 1999, (3): 305 -311 . DOI: 10.11821/yj1999030012