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植物生长调节剂对国槐蒸腾耗水的影响
引用本文:何茜,李吉跃,齐涛. 植物生长调节剂对国槐蒸腾耗水的影响[J]. 北京林业大学学报, 2007, 29(1): 74-78
作者姓名:何茜  李吉跃  齐涛
作者单位:北京林业大学资源与环境学院,省部共建森林培育与保护教育部重点实验室;四川省林业厅种苗站
基金项目:国家高技术研究发展计划(863计划)
摘    要:采用BP3400精密天平等仪器对喷施不同浓度(10、20、40 mg/L)“施丰乐”溶液(对照喷施清水)的当年生国槐的实际蒸腾耗水状况进行研究,用压力室法分阶段测定了苗木的叶水势. 结果表明:供试国槐属于低水势忍耐脱水耐旱树种,其叶水势与土壤含水量关系的方程为y = 0.018 2 x2-1.071 3 x+ 16.52(R2= 0.998 7). 在相同水分条件下,对照苗木的耗水速率比处理过的高10.2%~82.7%. 随着干旱胁迫的发生,对照苗木的叶水势急剧下降,而处理的苗木则维持着较高的叶水势. 从而得出植物生长调节剂“施丰乐”的喷施对减少苗木耗水,延缓苗木干旱起着重要的作用. 

关 键 词:"  施丰乐"    国槐  水势  耗水量  耗水速率
文章编号:1000-1522(2007)01-0074-05
收稿时间:1900-01-01
修稿时间:2005-09-12

Influence of plant growth regulator on transpiring water consumption of Sophora japonica L
HE Qian,LI Ji-yue,QI Tao. Influence of plant growth regulator on transpiring water consumption of Sophora japonica L[J]. Journal of Beijing Forestry University, 2007, 29(1): 74-78
Authors:HE Qian  LI Ji-yue  QI Tao
Affiliation:1 Key Laboratory for Silviculture and Conservation, Ministry of Education, College of Natural Resources &; Environment, Beijing Forestry University, 100083, P.R.China; 2 Seed and Seedling Station, Department of Forestry, Sichuan Province, Chengdu, 610081, P.R.China;
Abstract:Factual water consumption status of Sophora japonica L.sprayed with different concentrations of plant growth regulator Shifengle" solution including 10,20 and 40 mg/L(water is control) was studied by using BP3400 Precision Balance etc.Leaf water potential was measured using pressure chamber in different phases.It was indicated that S.japonica L.was low_water_potential,dehydration_resisted,drought_resisted species,and the equation of the relation between water potential and soil moisture content was y = 0.018 2 x~2-1.071 3 x 16.52(R~2= 0.998 7).Under the same moisture content conditions,water consumption rate of control was 10.2%(--)82.7% higher than that sprayed by "Shifengle".With the drought stress increasing,water potential of control sharply diminished,but the treated remained high water potential.
Keywords:"  Shifengle"  ,Sophora japonica L.,water potential,water consumption,water consumption rate
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