根据土壤入渗率确定草坪灌水量  

Determination of Sprinkler Irrigation Depth Based on Infiltration Rate of Turf Soil

作　　者：刘芳君[1] 苏德荣[1] 常智慧[1] 刘存琦[2] 

机构地区：[1]北京林业大学省部共建森林培育与保护教育部重点实验室,北京100083 [2]北京克劳沃草业技术开发中心,北京100029

出　　处：《湖南农业科学》2010年第5期122-125,共4页Hunan Agricultural Sciences

基　　金：国家科技支撑计划资助项目(2006BAD16B09)

摘　　要：研究了草坪足球场、高尔夫球场球道和果岭三种不同土壤基质的入渗率,依据入渗速率确定水分运移至草坪根系层深度所需要的适宜灌水量。研究表明:三种草坪基质的初始入渗率都比较大,之后显著下降,与时间呈幂指数关系。足球场、球道和果岭的土壤入渗率分别在前5、3、1.5min急速下降,之后逐渐减小,以此为标准估算三种草坪每周所需灌溉量分别为13.4、41.2和68.6mm。足球场入渗性能较差,灌溉强度不能超过1mm/min;果岭保水性能较差,故适当减少单次灌水量,增加灌溉次数,以免造成水分浪费和养分流失。The infiltration rates of three turf soils（football field,fairway and green in golf course） were measured by infiltrometer.The suitable irrigation quantity that needed by turf root system was determined according to infiltration rate of turf soil.The results showed that the initial infiltration rate was large and then decreased rapidly,which showed a relationship of power exponent with the time.The infiltration rate of football field soil,fairway soil and green soil rapidly decreased at 5 min,3 min and 1.5 min,respectively,and then gradually decreased.Therefore,the weekly irrigation depth for the three types of turf was 13.4 mm,41.2 mm and 68.6 mm,respectively.The football field was much more compacted,so the irrigation intensity could not exceed 1 mm/min.The water-holding ability of fairway and greens were poor,reducing the single irrigation quantity suitably and increasing irrigation frequency,so as to avoid wastage of water and nutrient loss.

关 键 词：草坪土壤 入渗率 灌水量 

分 类 号：S274.1[农业科学—农业水土工程]