河北省平山县刺槐造林保水剂施用效果研究  

Effect of Water-holding Agent on Acacia in Pingshan County of Hebei Province

作　　者：周金池[1] 马履一[2] 王学勇 马增旺 

机构地区：[1]北京林业大学生物中心,北京100083 [2]北京林业大学森林资源与环境学院,北京100083 [3]河北省林业科学院,河北石家庄050016

出　　处：《水土保持通报》2008年第4期70-74,共5页Bulletin of Soil and Water Conservation

基　　金："十一五"国家科技支撑计划重大项目"片麻岩及花岗岩山地抗旱节水造林配套技术试验示范"(2006BAD03A11-04)

摘　　要：为改良河北省平山县研究区土壤水分匮乏的现状，以刺槐为研究树种，以保水剂施用方式和用量为研究重点，采用完全随机实验设计方案，通过调查保水剂对刺槐生长指标（株高、地径）和生理指标（光合）以及对研究区土壤养分和土壤水分等方面的影响，确定保水剂最佳施用量和施用模式。试验结果表明，保水剂直接与土壤混施比保水剂吸水后再与土壤混施效果更好，这种施用模式可使刺槐地径增加19．70％～34．02％；株高增加41．41％～48．04％，而且连续施用2a后土壤肥力水平明显增加。全氮增加41．80％，速效磷增加130．77％，速效钾增加24．86％，微量元素增加41．37％～672．16％。保水剂的最佳施用量为64g／株，且施用3a后保水效果依然显著。In order to resolve soil water deficiency in Pingshan County, Heibei Province, the application of the technology of water-holding agent was studied. In this experiment, acacia was used as an example of forest species and absolute random design was used to investigate the effect of water-holding regent on growing items （height of plant and diameter of stem） and ecological item （photosynthesis） and the effect of waterholding agent on soil water content and soil nutrients. Results showed that the direct applying model of mixing soil with water-holding agent was better than that of mixing soil with water-holdlng agent absorbing water beforehand. The diameter of stem and the height of plant were promoted by 19.70%-34.02% and 41. 41%-48.04% by this applying mode, respectively. Soil fertility level was improved after 2 year application （Total N was increased by 41.80%; available P, by 130. 77%; available K, 24.86%; and Microelements, by 41, 37%-672.16%）. 64 g/plant was the best amount of application and water-remaining effect was still significant after applying water-holding agent 3 years later.

关 键 词：刺槐 保水剂 混施 

分 类 号：S728.2[农业科学—林木遗传育种] S482.99[农业科学—林学]