【作者】 刘芳君； 苏德荣； 常智慧； 刘存琦；

【Author】 Liu Fangjun~1,Su Derong~(1*),Chang Zhihui~1,Liu Cunqi~2 (1.The Key Laboratory of Silviculture and Conservation of Ministry of Education,Beijing Forestry University,Beijing 100083,China;2.Beijing Clover Grass Industry Development Group, Beijing 100029,China)

【机构】 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； 北京克劳沃草业技术开发中心；

【摘要】 草坪植物根系浅,灌水量过多会使土壤水分运移超过根系层深度,造成灌溉水的浪费。本文运用入渗仪试验研究了草坪足球场、高尔夫球场球道和果岭三种草坪不同土壤基质的土壤入渗率,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,且与时间呈幂指数关系。足球场、球道和果岭的入渗率分别在前5min、3min、1.5min急速下降,之后逐渐减小,依此为标准估算三种草坪每周所需灌溉量分别为13mm、41mm和69mm。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。更多还原

【Abstract】 Turfgrass is shallow root system plant.Irrigating too much would make soil water movement down surpass the root zone and get the waste of irrigation water.In this experiment, infiltration rates for three turf soils,football field,fairway and green in golf course,were measured by infiltrometer.This paper attempts to determine the amount of sprinkler irrigation water based on sectioning infiltration rates.The results showed that the initial infiltration rate was great and then decreased rapidly.The relation of infiltration rate with the time is power exponent.From the relations three time point were assigned by the slope of infiltration curves, the football field was 5 minutes,fairway 3 minutes,and green 1.5 minutes.Therefore,the weekly irrigation depth for the three types of turf was 13 mm,41 mm,and 69 mm,respectively.The football field was much more compacted,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,increasing irrigation frequency,so as to avoid wastage of water and nutrient loss.更多还原