中南林业科技大学学报
中南林業科技大學學報
중남임업과기대학학보
JOURNAL OF CENTRAL SOUTH UNIVERSITY OF FORESTRY & TECHNOLOGY
2009年
6期
51-56
,共6页
旷建军%彭珍宝%范水平%旷柏根%赵丛笑%王水平
曠建軍%彭珍寶%範水平%曠柏根%趙叢笑%王水平
광건군%팽진보%범수평%광백근%조총소%왕수평
植物生理学%树种%凋萎含水量%耐干旱力%评价
植物生理學%樹種%凋萎含水量%耐榦旱力%評價
식물생이학%수충%조위함수량%내간한력%평개
plant physiology%tree species%wilting water content) drought-resistant capacity%evaluation
通过盆栽试验,测定评价了55个树种的稳定凋萎含水量及其耐干旱能力.①55个树种的初始凋萎含水量和稳定凋萎含水量分别变化在4.81%~11.05%和1.85%~5.87%,稳定凋萎含水量出现时间平均为24.99 d,变化在7.00 d~42.30 d,初始凋萎含水量与稳定凋萎含水量出现的时间平均相差11.11 d,变化在3.20 d~30.60 d;②初始凋萎含水量、稳定凋萎含水量出现的时间、初始凋萎含水量至稳定凋萎含水量出现的时间差随光照强度的减少而增加,而稳定凋萎含水量的变化不明显;③单因素评价与多因素综合评价结果有趋同性,但在树种的排序上存在差异.单因素评价和多因素综合评价结果可分别用于不同干旱类型环境,有些耐旱力较强的树种同时也有较强的耐涝性,有的则相反.
通過盆栽試驗,測定評價瞭55箇樹種的穩定凋萎含水量及其耐榦旱能力.①55箇樹種的初始凋萎含水量和穩定凋萎含水量分彆變化在4.81%~11.05%和1.85%~5.87%,穩定凋萎含水量齣現時間平均為24.99 d,變化在7.00 d~42.30 d,初始凋萎含水量與穩定凋萎含水量齣現的時間平均相差11.11 d,變化在3.20 d~30.60 d;②初始凋萎含水量、穩定凋萎含水量齣現的時間、初始凋萎含水量至穩定凋萎含水量齣現的時間差隨光照彊度的減少而增加,而穩定凋萎含水量的變化不明顯;③單因素評價與多因素綜閤評價結果有趨同性,但在樹種的排序上存在差異.單因素評價和多因素綜閤評價結果可分彆用于不同榦旱類型環境,有些耐旱力較彊的樹種同時也有較彊的耐澇性,有的則相反.
통과분재시험,측정평개료55개수충적은정조위함수량급기내간한능력.①55개수충적초시조위함수량화은정조위함수량분별변화재4.81%~11.05%화1.85%~5.87%,은정조위함수량출현시간평균위24.99 d,변화재7.00 d~42.30 d,초시조위함수량여은정조위함수량출현적시간평균상차11.11 d,변화재3.20 d~30.60 d;②초시조위함수량、은정조위함수량출현적시간、초시조위함수량지은정조위함수량출현적시간차수광조강도적감소이증가,이은정조위함수량적변화불명현;③단인소평개여다인소종합평개결과유추동성,단재수충적배서상존재차이.단인소평개화다인소종합평개결과가분별용우불동간한류형배경,유사내한력교강적수충동시야유교강적내로성,유적칙상반.
; Through potted planting experiments, 55 kind of trees were put in a drought-resistant environment to measure the drought-resistant capacity of subtropical trees. Results show that the initial and stabilized wilting water content changed between 4.81% and 11. 05%, 1. 85% and 5. 87% respectively, the average appearing time of stabilized lwilting water content is 24. 99 days,changed between 7. 00 and 42. 30 days, the average time between the initial and stabilized is 11. 11 days, changed between 3. 20 days and 30. 60 days; the time from initial to stabilized wilting water content was increased with the reduction of light intensity. The result of single element evaluation is the same as the muli-factor evaluation, but has differences in the compositor of tree species; the results of single element evaluation and muli-factor evaluation can be applicable to the different drought circumstances, some stronger drought-resistant tree species have.stronger flooding tolerance, some trees have opposite results(while some not).