河南农业大学学报2017，Vol.51Issue(4)：487-494,520,9.
华北地区园林树木水分利用特性及影响因子研究
Study on water use characteristics and influence factors of landscape plants in North China
摘要
Abstract
The water use properties of sixteen landscape plants were measured using CI-340 photosynthetic with the method of potted plants.Results show:1) Landscape plants' WUE at 7:00-11:00 were obviously higher than that at 13:00-17:00.The daily changes of coniferous and shrub trees' WUE showed the overall downward trend,and that of the broadleaf and economic tree species had "lunch break" phenomenon.2) Economic tree species' WUE was the highest at vigorous growth period.It was (4.04 ± 0.20) μmol · mmol-1.Broad leaved tree species' WUE were the biggest (3.82 ± 0.56μmol · mmol-1) at early growing season.Shrub tree species' WUE were the highest (2.94 ± 0.05μmol · mmol-1) at the end of growing season.Coniferous tree species' WUE was the highest at vigorous growth period.It was 2.73 ± 0.25 μmol · mmol-1.3) The WUE order was economic tree species ((3.65 ±0.12) μmol · mmol-1) ＞ deciduous tree species ((3.33 ± 0.41) μmol · mmol-1) ＞ shrub tree species ((2.90 ±0.27) μmol · mmol-1) ＞ coniferous tree species ((2.64 ±0.27) μmol · mmol-1),and economic tree species' WUE was the 1.38 times of the coniferous tree species'.4) The WUE presented a very significant positive correlation (P ＜0.01) with Pn and Gs,and showed a significant positive correlation (P ＜ 0.05) with PAR,and a very significant negative correlation (P ＜ 0.01) with VPD,t(a) and t (l).The results of the study provided theoretical basis for the rational use of water resources and the scientific management of landscape greenbelt.关键词
园林树种/水分利用率/影响因子Key words
landscape plants/water use efficiency/influence factors分类
农业科技引用本文复制引用
丁杰,李少宁,鲁绍伟,丁丽,杨超,陈波,杨新兵..华北地区园林树木水分利用特性及影响因子研究[J].河南农业大学学报,2017,51(4):487-494,520,9.基金项目
北京市农林科学院青年基金项目(QNJJ201532) （QNJJ201532）
创新能力建设专项项目(KJCX20150205) （KJCX20150205）
2011协同创新中心(PXM2017_014207_000043) （PXM2017_014207_000043）
北京市农林科学院科技创新团队项目(JWKST201609) （JWKST201609）
