摘要
通过保水剂在片麻岩石质山地造林中应用试验,研究了不同用量的保水剂对臭椿造林效果的影响。结果表明：不同用量保水剂处理后,提高了臭椿土壤含水量和苗木成活率,平均土壤含水量和苗木成活率分别比对照提高2.59%~47.84%和28.56%~50.00%;保水剂影响光合速率和蒸腾速率的日变化进程,提高了水分利用效率。综合考虑成本和造林效果等多种因素,每穴30 g的保水剂用量具有较好的效果。
Effect of water-retaining agent on forestation of Ailanthus altissima was studied in gneiss rocky mountainous area. The results showed that soil water content and forestation survival rate increased more or less after applying water-retaining agent, and the average value of them were 2.59%-47. 84% and 28.56% -50.00 % higher respectively than the control. Additionally, application of water-retaining agent could improve water utilization rate through impacting on the daily rhythm of photosynthesis rate and transpiration rate. Considering forestation cost and the survival rate, 30 g per plant was an ideal dosage for A. altissirna in gneiss rocky mountainous area.
出处
《西北林学院学报》
CSCD
北大核心
2009年第6期74-76,共3页
Journal of Northwest Forestry University
基金
科技部"十一五"国家科技支撑计划课题"华北土石山区植被恢复与重建技术试验示范"(2006BAD03A11-04)
关键词
保水剂
臭椿
造林成活率
水分状况
光合速率
蒸腾速率
water-retaining agent
Ailanthus altissima
forestation survival rate
water status
photosynthesis rate
transpiration rate
