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冬小麦是该灌区主要粮食作物,研究其需水规律及节水灌溉对粮食增产、合理利用水资源、搞好灌区水资源规划都有重要的意义。本文主要根据宝鸡峡灌区试验资料,并用泾惠灌区1983年前的试验资料作验证,对灌区冬小麦的需水规律和节水灌溉作了初步分析。(一)冬小麦的需水规律1.产量与需水量的关系建国后,我省曾对冬小麦的需水量作过大量的研究工作,一般产量在250kg/亩左右时,其需水量为300m~3/亩左右。十一届三中全会以来,冬小麦单产提高较快,出现了一批亩产过400kg,以至500kg 以上的丰产事例,其实测耗水量仍为300m~3/亩左右。为什么冬小麦的产量不同,而其需水量数值
Winter wheat is the main food crop in the irrigated area. Studying its water requirement rule and water-saving irrigation are of great significance to increase grain yield, rationally utilize water resources and improve water resources planning of irrigated area. Based on the experimental data of Baojixia Irrigation District and the experimental data of Jinghui Irrigation Area before 1983, this paper made a preliminary analysis on the water requirement and water saving irrigation of winter wheat in the irrigation area. (A) of the law of winter wheat water 1. Production and water relations After the founding of our province had winter wheat water demand made a lot of research work, the general output at about 250kg / acre, its water demand is 300m ~ 3 / Mu or so. Since the Third Plenary Session of the 11th Central Committee of the Communist Party of China, the yield of winter wheat has risen rapidly. A number of high-yielding cases of over 400kg per mu and over 500kg have appeared. In fact, the measured water consumption is still about 300m ~ 3 / mu. Why winter wheat production is different, and its water demand value