1985年12月7日至10日农田灌溉研究所在河南新乡召开了一次干旱缺水地区经济用水学术讨论会。北京、河北、山西、陕西、甘肃等省(市)或有关地区水利厅(局)、水科所、灌溉试验站、农科所的同志,在一起交流了这一课题组织协作研究四年来取得的成果和经济效益。提交会议的论文、报告共二十六篇。内容大致分五个方面。(1)干旱对作物生长和产量的影响。包括干旱对某些作物籽粒和穗形成的影响,干旱条件下的减产系数、不同发育阶 December 7 to 10, 1985 The Institute of Farmland Irrigation held a symposium on economic water use in arid and dry areas in Xinxiang, Henan. In the past four years, Beijing, Hebei, Shanxi, Shaanxi and Gansu provinces (cities) or the relevant regional water conservancy offices (bureau), water science institutes, irrigation experimental stations and agricultural institutes comrades exchanged their experiences The results and economic benefits. Submitted to the conference papers, a total of twenty-six reports. The content is roughly divided into five aspects. (1) the impact of drought on crop growth and yield. Including the effects of drought on the grain and panicle formation of some crops, the yield reduction coefficient under drought conditions, the different developmental stages