霍泉灌区冬小麦夏玉米高产节水灌溉制度

根据山西省霍泉灌区李堡试验区1996年10月～1999年9月3年的试验资料,分析建立了冬小麦与夏玉米的耗水量估算模型及产量与水分关系的数学模型;以1998年10月～1999年9月冬小麦、夏玉米连作为例,对两种作物的需水规律进行了分析,并利用所建模型,分析给出了冬小麦、夏玉米连作套种的高产节水灌溉定额。最后用动态规划法分析提出了有限水量在作物生育期内的最优分配方案

Schedules of Irrigation for the High-Yield and Water-Saving Cultivation of Winter Wheat and Summer Maize in Huoquan Irrigation District of Shanxi Province

According to experimental data in Libao experimental area of Huoquan Irrigation District from October 1996 to September 1999, the models of estimating crop water consumption and the relationships between crop yield and water consumption were established. Based on the models, the irrigation norms of high yield and water saving cultivation of winter wheat and summer maize were presented. Taking the continuous cropping of winter wheat and summer maize from October 1998 to September 1999 as an example, the water requirements and the water consuming processes of winter wheat and summer maize were analyzed. And the optimal distributing scheme of limited water resources in crop growing seasons was also suggested by the principle of dynamic programme.