为探求淮河流域主要农作物的受旱减产规律，以淮北平原地区常用玉米蠡玉16号为试验材料，采用测坑法进行了作物的受旱试验，研究主要农作物不同受旱条件下的减产规律，构建产量与水关系模型。结果表明：蠡玉16号玉米关键期受旱对其产量的影响十分显著，轻旱、中旱、重旱的减产率分别为4.3%、36.8%、51.1%，且随着受旱程度的增大减产率剧增；蠡玉16号玉米在抽雄灌浆期对水分亏缺最为敏感，敏感指数达0.9251，其次是拔节期，分蘖期与乳熟期，敏感指数分别为0.1262、0.0662和0.0032。水分亏缺对蠡玉16号玉米产量影响最大的阶段为抽雄灌浆期，此阶段也是需水强度最大期。
英文摘要:
For exploration of huaihe river main crop drought production rule, common maize Liyu No.16 in huaibei plain area was used as test material, the pit measurement method is used for Liyu No.16 maize drought test, studied the production of their level of different drought conditions, the relationship between yield and water model was constructed. Results show that in the crucial period of Liyu No.16 maize growth, the influence of drought on its production is very significant, with the development of light drought、drought and severe drought,reduced production rate were 4.3%, 36.8% and 4.3%，respectively；and the reduced production rate increased with the increase of the degree of drought; Liyu No.16 maize was most sensitive to water deficit in tasseling grouting period, and the sensitive index was 0.9251, followed by jointing stage, tillering stage and milk stage, the sensitive index was 0.1262, 0.0662 and 0.0032, respectively.
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