不同水分处理条件下小麦需水规律研究

A Study on Water Requirement Regulation of Wheat Under the Conditions of Different Water Treatments

对小麦需水量与产量的关系进行了试验研究。结果表明,小麦需水量与产量关系呈二次抛物线关系,函数式y=-0.434 1 x2+348.66 x-67 248。在整个生育期中,小麦苗期需水强度最低,拔节期至成熟期小麦的需水强度基本随着生育期的推进逐渐上升并在孕穗至成熟期达到峰值,说明拔节期~孕穗期为小麦的生长旺盛期。试验成果为制定贵州小麦灌溉制度提供了参考依据。

The experimental study on the relationship between water requirement and wheat yield is conducted in this paper.The results show that the relationship between water requirement and wheat yield is quadratic parabola relationship with the function as y = 0.434 1 x2＋348.66x-67 248; in the whole growth period,the water requirement intensity in wheat seedling stage is the minimum,while that in the jointing stage to maturity stage gradually increases with the advance of growth stage and reaches the peak at booting to ripening stage,which means that jointing stage to booting stage is the exuberant growth period of wheat.The experimental results provide the reference for the decision of Guizhou wheat irrigation schedule.