摘要
为研究板栗Castanea mollissima林不同除草方式对土壤性质的影响,在浙江省临安市布置了不同除草方式试验,包括对照、翻耕除草、施用除草剂、刈割除草而不翻耕等4个处理。结果表明:不同除草方式对土壤养分无显著影响,传统的翻耕除草方式明显增加土壤微生物量碳和水溶性有机碳质量分数(P<0.05);而除草剂除杂草处理,土壤水溶性有机碳、微生物量碳含量以及利用的碳源种类明显下降;对照处理土壤微生物功能多样性最好;刈割除草但不翻耕处理土壤各项指标均为中等。兼顾水土保持和土壤质量,采用刈割除草方式对林地土壤质量维持和板栗生长均较有利。
Clearing weeds in an intensively managed Chinese chestnut（Castanea mollissima） plantation is a common practice;however,this could change soil quality.To test the effects of clearing weeds in a Chinese chestnut plantation on soil biological properties,a field trial was conducted.Treatments of deep plowing,spraying herbicides,cutting and no treating（control） were done in Lin＇an City.Results showed that soil with deep plowed weeds had more abundant soil microbial biomass carbon（MBC） and water-soluble organic carbon（WSOC） compared to the control.The opposite was observed under Chinese chestnuts with weeds cleared using herbicides.The Biolog Micro-plate revealed that soil in the control plot had the greatest microbial biodiversity with the highest C utilization capability.Also,all analyzed soil biological parameters in the weed cutting plots ranked in the middle.Since soil plowing often results in soil erosion,cutting weeds but not plowing them into deep soil is recommended for farmer-managed Chinese chestnut plantations in subtropical zones with high precipitation.
出处
《浙江林学院学报》
CAS
CSCD
北大核心
2010年第5期659-663,共5页
Journal of Zhejiang Forestry College
基金
浙江省重点科技攻关项目(2007C22082)
关键词
土壤学
板栗林
除草方式
微生物量碳
微生物功能多样性
soil science
Castanea mollissima
weed clearing
microbial biomass carbon
microbial biodiversity
