Investigation And Analysis Of Growth Of Ornamental Tree Species Introduced Of South And North In The Area Of Yangling

This article on South Campus, Northwest A & F University, Yangling Expo Park and the surrounding areas of the growth of introduced ornamental tree survey, as a representative of analysis of differences in climate conditions (especially temperature) on the introduction of the relevant regions of the growth of ornamental trees Implications for the future, watch the trees off in the region to provide a basis for introduction. From this perspective,this paper selects the " tree of the North cited the South " 30 species of ornamental trees, "tree of the South cited the North" 33 species of ornamental trees, more than one-year follow-up survey of growth conditions; through its high temperature, low temperature growth traits between phenomena (such as yellow wilt, anti-shrinking volumes, etc.), for the statistics, records, research and analysis, in the "Northern Areas south cited"the tree species, Betula platyphylla, Larix gmelini(Rupr.) and other high temperature should not be introduced without planting, Pinus sylvestris and other high temperature suitable for introduction and planting; in the "South kinds North cited"the trees, the Indocalamus latifolius,Mahonia fortunei(Lindl.)Fedde cold intolerance should not be introduced plant, low temperature suitable for introduction of palm planting; some preliminary results obtained for ornamental trees in the region proposed introduction and domestication Recommendation:1. Introduced species introduced before the need to understand the ecological habits of three-point temperature of the growth of tree species native to local climate conditions, such as the origin and the area of YANGLING are quite different in climate, should be carefully introduced.2. After the introduction of the necessary and timely introduction and domestication of their work, to adapt to the area of YANGLING of the ecological environment and return to normal growth, but also to irrigate and fertilize the time, to complement its introduction in the process of energy loss and improve disease resistance.3. Do the daily work of cultivation and management, not letting the free growth after introduction, growth habits according to their time to prune pruning and pest control of their prevention work to ensure their normal growth and development.4. Does not apply to the growing season in a timely manner to the appropriate micro-climate regulation, in the hot summer on the North South lead tree species shade measures should be in a timely manner; in the cold northern winter on the southern species of trees should be cited in a timely manner rope lashing and the film cold work.