覆盖木屑对土壤理化性质及樱花根系生长发育的影响  

Effects of Mulching Wood Chips on Soil Physicochemical Properties and Root Growth of Cherry Blossom

作　　者：侯世星 黄柏荣 胡娜 李大鹏 陈贵君 缪英 HOU Shi-xing;HUANG Bai-rong;HU Na(The Administration of Yuyuantan Park,Beijing 100142;College of Forestry,Beijing Forestry University,Beijing 100083)

机构地区：[1]北京市玉渊潭公园管理处,北京100142 [2]北京林业大学林学院,北京100083 [3]中国园林博物馆北京筹备办公室,北京100070

出　　处：《安徽农业科学》2024年第12期153-157,共5页Journal of Anhui Agricultural Sciences

基　　金：北京市公园管理中心科技课题项目“樱花褐斑穿孔病品种抗性研究及防治药剂筛选”(zx2022017);北京市公园管理中心科技课题项目“不同土壤覆盖方式对樱花生长发育的影响”(zx2018011)。

摘　　要：为了探究覆盖木屑对土壤理化性质及其樱花根系生长发育的影响,以期为园林植物土壤覆盖标准提供理论依据。测定了铺设木屑后土壤物理性质、化学性质和樱花根系生长发育的变化。结果表明,覆盖木屑可以显著改良土壤理化性质,促进樱花根系生长。覆盖木屑后土壤容重显著降低,土壤质量含水量、体积含水量、贮水量、最大持水量、毛管持水量、最小持水量、非毛管孔隙度、毛管孔隙度和总孔隙度显著增加;覆盖木屑后土壤pH显著降低,土壤有机质含量、有效磷、速效钾、硝态氮、全铁以及全锌含量显著高于未铺木屑的土壤;覆盖木屑可以促进樱花根系生长,覆盖木屑后樱花根系的总长度超过不覆盖的10倍。相关性分析结果表明容重和非毛管孔隙度与樱花根系生长显著相关,容重越小、非毛管孔隙度越大,可能越有利于樱花根系的生长。综上所述,樱花园内土壤覆盖木屑能够改良土壤理化性质,促进樱花根系生长。In order to provide theoretical basis for soil mulching standards,the effects of mulching wood chips on soil physicochemical properties and the growth and development of cherry blossom roots were investigated.The changes of soil physical and chemical properties and root growth of cherry blossoms after laying wood chips were measured.The results showed that mulching wood chips could significantly improve soil physicochemical properties and promote root growth of cherry blossoms.After mulching wood chips,the soil bulk density decreased significantly,while the soil mass water content,volumetric water content,water storage capacity,maximum water capacity,capillary water capacity,minimum water capacity,non-capillary porosity,capillary porosity and total porosity increased significantly.The pH value decreased significantly after covering wood chips,and the soil organic matter content,available phosphorus,available potassium,nitrate nitrogen,total iron and total zinc contents were significantly higher than those of soil without wood chip covering.Covering with wood chips could promote the growth of cherry blossom roots,and the total length of cherry blossom roots after covering with wood chips was more than 10 times that without covering.The correlation analysis results showed that the soil bulk density and non-capillary porosity were significantly correlated with the root growth of cherry blossom.The smaller the soil bulk density and the larger the non-capillary porosity were,the more favorable the root growth of cherry blossom.In summary,the soil covered with wood chips in cherry blossom garden could improve the physical and chemical properties of soil and promote the growth of cherry blossom roots.

关 键 词：玉渊潭公园 樱花 土壤覆盖 土壤理化性质 根系生长发育 

分 类 号：S685.99[农业科学—观赏园艺]