三峡库区柑橘园杂草种类、分布及危害  

Diversity and harmfulness of weed species in citrus orchards in the Three Gorges Reservoir Region

作　　者：闫洋洋 王玉宽[1] 徐佩[1,2] 严坤 刘勤[1,2] 逯亚峰 李明[1,2] 王晓艺 李得霞[4] 李俊霖 杨莉荟[4] YAN Yangyang;WANG Yukuan;XU Pei;YAN Kun;LIU Qin;LU Yafeng;LI Ming;WANG Xiaoyi;LI Dexia;LI Junlin;YANG Lihui(Institute of Mountain Hazarda and Environment,Chinese Academy of Sciences&Ministry of Water Conservancy,Chengdu 610041,Sichuan,China;The Research Station of Soil and Water Conservation and Environmental in Three Gorges Reservoir Region,Chongqing 404020,China;College of Water Conservancy and Hydropower Engineering,Sichaun Agricultural University,Ya’an 625014,Sichuan,China;College of Resoueces and Environment,Southwest University,Chongqing 400715,China)

机构地区：[1]中国科学院、水利部成都山地灾害与环境研究所,四川成都610041 [2]三峡库区水土保持与环境研究站,重庆404020 [3]四川农业大学水利水电学院,四川雅安625014 [4]西南大学资源环境学院,重庆400715

出　　处：《草业科学》2020年第11期2309-2319,共11页Pratacultural Science

基　　金：中科院成都山地所“一三五”方向性项目(SDS-135-1703);中科院、水利部成都山地灾害与环境研究所山区发展青年科学基金(SDSSQFZ-2019-01);三峡工程运行安全综合监测项目(Y3A3720720)。

摘　　要：为明确三峡库区柑橘(Citrus reticulata)园杂草种类、分布及危害状况,采用五点法对该地区51个柑橘园255个杂草样方进行调查。结果表明,该地区柑橘园杂草有185种,隶属53科146属,其中菊科、禾本科、蓼科、伞形科、苋科为优势科;空心莲子草(Alternanthera philoxeroides)、十字马唐(Digitaria cruciata)、香附子(Cyperus rotundus)及鬼针草(Bidens biternata)等15种杂草优势种为该地区主要防治目标。同时,发现该地区柑橘园杂草群落有向顶级演替趋势。因此,关于柑橘园杂草防治应以缓解或抑制优势种种群向顶级演替为主要目标,并利用种间关系进行区域性防治。本研究可为三峡库区柑橘园杂草的综合防治提供重要参考。To determine the diversity and harmfulness of weed species in citrus orchards in the Three Gorges Reservoir Region,255 quadrats in 51 citrus orchards were investigated using a five-point pattern.A total of 185 weed species were found,belonging to 146 genera in 53 families,of which Compositae,Gramineae,Polygonaceae,Apiaceae,and Amaranthaceae were the most dominant.We identified 15 species(Alternanthera philoxeroides,Digitaria cruciata,Cyperus rotundus,Bidens biternata,and others)as priority targets for control.In addition,it was found that the citrus orchard weed communities showed a clear trend of succession toward climax.Therefore,the main objective of weed control in citrus orchards should be to mitigate or inhibit the succession of climax species,and the regional control strategy should be based on interspecies relationships.This study provides an important reference for weed control and optimal management of citrus orchards in the Three Gorges Reservoir Region.

关 键 词：三峡库区 柑橘园杂草 杂草种类 优势种 

分 类 号：S451[农业科学—植物保护] S666