作 者：
;
;
;
机构地区：
华南农业大学林学院
出 处：
《山西林业科技》
2005年第2期19-22,25,共5页
摘 要：
阐述了抗旱性结构、抗旱生理及抗旱造林措施方面的研究进展。在抗旱性结构方面,树木靠减少叶量和叶面积、增加根系,及叶、茎、根的旱生化结构来提高抗旱能力。在抗旱性生理方面,光合作用与蒸腾作用、酶活性、根系活力及水分参数均随着树木抗旱能力的强弱而发生变化。通过树种选择、提前整地、覆盖造林和使用保水剂等造林措施的实施,均可提高树木的抗旱能力。
In this paper, the authors summarized the progress in structure of drought resistance of tree species, the physiology of drought resistance and forestation technology of drought resistance. In the aspect of structure of drought resistance, tree species improve the capacity of drought resistance by reducing the number and area of leaves, increasing roots and forming certain structure of drought resistance of leaves, stems and roots. And in the aspect of the physiology of drought resistance, plant photosynthesis and transpiration, enzyme activity, root vigor and water parameters vary according to the capacity of drought resistance in tree species. In addition, in the aspect of forestation technology of drought resistance, the capacity of drought resistance can be enhanced by choice of tree species, soil preparation in advance, covered forestation and the application of water-absorbent.
关 键 词：
树木
抗旱性
抗旱措施
水分胁迫
造林技术
领 域：
[农业科学]
[农业科学]
[农业科学]
