晋南冬小麦节水高产灌溉制度研究

根据灌溉试验资料，在分析晋南冬小麦生育期水分亏缺程度的基础上，研究拟订了该区冬小麦节水高产灌溉制度，即生育期内浇返青、孕穗、灌浆三次关键水，灌溉定额１８００ｍ＾３／ｈｍ＾２，灌水定额６００ｍ＾３／ｈｍ＾２左右，就可达到节水高产的目的。结合晋南冬小麦不同生育阶段缺水对产量的影响分析及我国北方各地对冬小麦最佳灌水时间的研究成果，对晋南冬小麦的最佳灌水时间进行了分析论证。具体实施节水灌溉制度时，根据晋南

Research on the Irrigation System in South Shanxi Province

In accordance with the irrigation test information and the analysis on the water shortage extent of winter wheat during the growing period in south Shanxi Province, irrigation system for water saving and high yield of winter wheat was studied and proposed, i. e. during the growing period of winter wheat, three times key irrigation were conducted for greening, booting and milking,the irrigation quota was 600m3/km2 each time and 1800m3/km2 in total, as a result, the purpose of water saving and high yield of winter wheat could be reached. With the analysis of impact of water shortage in different growing stages of winter wheat in south Shanxi on the yield of wheat, and research of optimum irrigation time for winter wheat in north China, analysis and demonstration were conducted on the optimum irrigation time for winter wheat in south Shanxi Province. When executing water saving irrigation system, agriculture production zones were divided according to the water resources in different regions in south Shanxi Province, and comprehensive measures were worked out for different region's agriculture water saving and grain increase.