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作 者:朱铁霞[1] 胡自治[2] 刘自学[3] 高凯[1] 张永亮[1]
机构地区:[1]内蒙古民族大学农学院,内蒙古通辽028043 [2]甘肃农业大学草业学院,甘肃兰州730070 [3]北京克劳沃草业集团公司,北京100029
出 处:《草原与草坪》2009年第1期71-73,77,共4页Grassland and Turf
摘 要:采用盆栽模拟大田试验方法,对北京地区3种暖季型单播草坪进行蒸散量研究,结果表明:3种草坪充分灌水条件下蒸散量高于限制灌水条件,其蒸散量顺序为狗牙根〉结缕草〉野牛草;3种暖季型草坪蒸散量随土壤含水量的增加而增加,呈正相关关系,其关系式为:狗牙根为y=1.051z+2.523(R^2=0.914);结缕草为:y=1.135z+3.105(R^2=0.984);野牛草为:y=0.801x+2.948(R^2=0.865)。一天内蒸散量呈现单峰变化趋势,并且709,5~809/6的蒸散量时间集中在10:00-16:00。The evapotranspiration (ET) of 3 warm season turfgrasses was studied with pot experiment in Beijing. The result showed that the ET of 3 warm-season turfgrasses was higher under sufficient irrigation than that under limited irrigation, and the order of ET was Cynodon dactylon 〉 Zoysica sinica 〉 Buchloe dactyloides. Under the different soil water contents, the ET decreased with the decrease of soil moisture. The daily variation of ET showed a single peak curve, and the transpiretion mainly occurred from 10. 00 to 16. 00.
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