生物炭对公园土壤改良效果评估  

Evaluation of Effect of Biochar Application on Park Soil Improvement

作　　者：李发琴 张孝男 王京梅 王达 戴子云 刘嘉纬[1] LI Faqin;ZHANG Xiaonan;WANG Jingmei;WANG Da;DAI Ziyun;LIU Jiawei(College of Landscape Architecture and Horticulture,Southwest Forestry University,Kunming 650224,China;Beijing Key Laboratory of Ecological Function Assessment and Regulation Technology of Green Space,Beijing Institute of Landscape Architecture,Beijing 100102,China;School of Landscape Architecture,Beijing Agricultural College,Beijing 102206,China;Guangyang Valley Urban Forest Park,Xicheng District,Beijing 110104,China;Beijing Shouzhu Tianren Ecological Landscape Co.,Ltd.,Beijing 102600,China)

机构地区：[1]西南林业大学园林园艺学院,云南昆明650224 [2]北京市园林科学研究院绿地生态功能评价与调控技术北京市重点实验室,北京100102 [3]北京农学院园林学院,北京102206 [4]北京市西城区广阳谷城市森林公园,北京110104 [5]北京市首发天人生态景观有限公司,北京102600

出　　处：《黑龙江农业科学》2024年第3期81-86,共6页Heilongjiang Agricultural Sciences

基　　金：北京市科技计划(Z181100009818023)。

摘　　要：城市绿地土壤质量是影响绿地植被景观的重要因素,而生物炭具有优良的土壤改良应用潜力。通过田间试验,以北京市西城区广阳谷城市森林公园为研究区域,探索施用生物炭对城市绿地土壤质量改良的效果以及对植物生长影响。结果表明,(1)施用生物炭处理的蒙古栎和银白槭叶片的长、宽每月均能生长3%~5%。而不施用生物炭处理的蒙古栎和银白槭的叶片的长、宽每月只能生长1%~2%。其中银白槭的复壮效果更明显。(2)试验组蒙古栎和银白槭的光合速率与对照组相比,提高0.88%~13.38%。施用生物炭的蒙古栎净光合速率表现为双峰型动态变化,而银白槭为单峰型变化。蒙古栎试验组净光合速率与对照组差异不显著,而银白槭试验组的净光合速率从7月10日开始与对照组相比差异显著。(3)施加生物炭的土壤有机质含量提升6.04%,pH下降2.47%,电导率下降6.77%,氮磷钾等营养元素分别增长28.48%、10.05%和3.10%。综上,施用生物炭可改良城市绿地土壤质量,并对植物有复壮效果。Soil quality of urban green space is an important factor affecting the vegetation landscape of green space,and biochar is known to have excellent potential for soil improvement application.The effects of biochar application on soil quality improvement and plant growth in urban green space were explored,through field experiments in Guangyang Valley Urban Forest Park in Xicheng District,Beijing.The results showed that,(1)The length and width of the leaves of quercus mongolica and acer saccharinum treated with biochar could grow by 3%—5%per month,which was only 1%—2%without biochar treatment.The rejuvenation effect of acer saccharinum was more significant.(2)The photosynthetic rates of quercus mongolica and acer saccharinum in the test group increased by 0.88%to 13.38%respectively compared with the control.The net photosynthetic rate of quercus mongolica applied with biochar showed a bimodal dynamic change,while that of acer saccharinum was a unimodal change.The difference between the net photosynthetic rate of the quercus mongolica test group and the control group was not significant,while the difference of acer saccharinum was significant from July 10th.(3)The organic matter content of soil with biochar applied was enhanced by 6.04%,pH decreased by 2.47%,conductivity decreased by 6.77%,and nutrients such as nitrogen,phosphorus,and potassium increased by 28.48%,10.05%and 3.10%,respectively.In conclusion,the application of biochar can improve the soil quality of green space and rejuvenat plants.

关 键 词：生物炭 土壤改良 城市绿地 植物生长 

分 类 号：S156[农业科学—土壤学]