Research on Evapotranspiration and Soil Moisture Threshold of Roof Greening Turf-grass(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Research on Evapotranspiration and Soil Moisture Threshold of Roof Greening Turf-grass

Author(s):: SONG Yufei1; LI Haimei1; LIU Xia2; TANG Xin1; LIU Xiao1; (1.College of Landscape Architecture and Forestry，Qingdao Agricultural University，Qingdao，Shandong 266109；2.Shandong Green City Municipal Garden Engineering Co.Ltd.,Liaocheng，Shandong 252000)

Keywords:: turf-grass; evapotranspiration; photosynthetic physiology; soil moisture threshold

Abstract:: Three kinds of turf-grass（Poa pratensis，Lolium perenne，Cynodon dactylon） which usually planted on roof were used as material,two groups which one was full irrigation and the other one was limited irrigation were set,the ET and photosynthetic physiology process of the turf-grass were measured.The results showed that during the experimental period the two kinds of irrigation group both behaves as Lolium perenne>Cynodon dactylon >Poa pratensis，meanwhile the evapotranspiration of turf-grass in full irrigation group was greater than the limited irrigation group.Besides,the suitable soil moisture scope was acquired,Poa pratensis 62.5%-81.9%,Cynodon dactylon 66.0%-82.6%,Lolium perenne 59.7%-70.3% and the most suitable irrigation volume was determined.Three turf-grass demand supplementary irrigation five times，nine times and four times，and the supplementary irrigation quantity were 25.9 mm，16.5 mm and 30.3 mm once.

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Last Update: 2016-11-07