气象因子对吴忠市利通区主要农作物灌溉制度的影响研究  

Study of main crop irrigation system from meteorological factors in Litong region of Ningxia irrigation area

作　　者：沈强云[1] 王兆川[1] 韩丙芳[2] 李梅婷[2] 陶卫新 杨建功 

机构地区：[1]宁夏农林科学院作物所,宁夏银川750105 [2]宁夏大学土木与水利工程学院,宁夏银川750021 [3]吴忠市利通区农技中心,宁夏吴忠751100

出　　处：《农业科学研究》2006年第3期37-39,共3页Journal of Agricultural Sciences

基　　金：宁夏重点科技攻关项目"宁夏引黄灌区节水技术的集成与示范"(20030060)

摘　　要：从气象因素方面,分析了影响灌溉蒸发的温度、降雨、风速等因素,确定了春小麦、玉米、水稻的适宜播种、收获时期.春小麦的播种至收获适宜时间为3月11日至7月15日;玉米为4月20日至9月19日;水稻育秧至收获的时间为4月12日至10月4日.通过FAO-PM公式,对宁夏吴忠市利通区全年净水面蒸发量的实际观测结果与作物蒸散量(ET0)的变化趋势进行了分析,并对主要农作物春小麦、玉米、水稻的蒸散量(ETc)进行了计算,得出了灌水量、灌水时间等具体指标,以供实践参考.The meteorological factors which influence the irrigation water evaporation, such as temperature, rainfall, wind speed, etc. were analyzed to set up irrigation systems for main crops in the irrigation area of Litong county of Ningxia. The result showed that reasonable planting and harvest date for spring wheat, maize and rice were determined, i.e. the date of sowing and harvesting of spring wheat is Mar. 11 and Jul. 15, for maize it is Apr. 20 and Sept. 19, and for rice it is Apr. 12 and Oct. 4 in Li Tong region in Ningxia irrigation area. The annual water evaporation was observed by FAO-PM formula and compared with ET0, and the evaporation quantities of wheat, maize and rice was worked out, at the same time, the water irrigation volume and schedule were proposed.

关 键 词：气象因子 宁夏引黄灌区 灌溉制度 农作物 

分 类 号：S275[农业科学—农业水土工程]