晋中地区冬小麦最优灌溉制度研究

Research on Winter Wheat's Optimum Irrigation Schedule in Jinzhong Region

根据在晋中地区对冬小麦进行的四种灌溉制度试验对比,研究了灌溉制度对冬小麦产量构成及最终产量、节水效益和经济效益的影响。结果表明灌三水处理的已经基本能够满足高产小麦对水分需求,是水分利用效率最高,也是最经济高效的节水灌溉方式。文中提出了一套适合华北半湿润偏旱井渠结合灌区冬小麦节水效益型灌溉制度。

According to the comparison of 4 kinds of irrigation schedules of winter wheat in Jinzhong region, the article analyzes the influence of irrigation schedule on winter wheat＇s yield formation, final yield, water-saving and economical benefit. The research result indicates that the plan in which irrigation is to be taken 3 times in whole growing season, can basically meet the water requirement demand of winter wheat under high production condition. This irrigation fashion has the highest water use efficiency and also is the most economical water-saving irrigation fashion. On the basis of these, the paper presents a set of water-saving irrigation schedule of winter wheat suited to the irrigation district using well and river water in semi-humid and arid region of Huabei Region.