摘要
为了明确宜昌市主要烟叶产区烟田杂草种类及分布,确定危害烟叶生产的主要杂草种类,为高产优质烟叶生产提供技术支撑,在宜昌市的秭归县、兴山县和五峰县选取了10个样点进行烟田杂草普查。结果表明,宜昌市烟田杂草种类53种,分属22科。根据杂草发生密度,宜昌市烟田杂草优势种为马唐(Digitaria sanguinalis)、尼泊尔蓼(Polygonum nepalense)和牛膝菊(Galinsoga parviflora)。根据杂草发生频度,宜昌市烟田高频杂草分别为尼泊尔蓼、铁苋菜(Acalypha australis)、马唐和牛膝菊。海拔高度对杂草的种类及分布有一定影响,杂草种类在低海拔更为丰富。
In order to clarify the weed species and distribution of main tobacco districts in Yichang, determine the major weed species harmful to tobacco production and provide technical support for improving the production and quality of tobac- co,10 sample sites in tobacco fields from Zigui county, Xingshan county and Wufeng county in Yichang were selected to survey weed. The results showed there were 53 weed species belonging to 22 families in tobacco fields in Yichang. According to weed density, the dominant species were Digitaria sanguinalis, Polygonum nepalense and Galinsoga parvifl. According to weed growing frequency, weeds with high frequency were ranked as Polygonum nepalense, Acalypha australis, Digitaria san- guinalis, and Galinsoga parvifl. Moreover, altitude had certain influence on the species and distribution of weed, weed species being more abundant at lower altitude.
出处
《湖北农业科学》
北大核心
2013年第21期5210-5213,共4页
Hubei Agricultural Sciences
基金
湖北省烟草公司重点项目(027Y2013-010)
湖北烟草有害生物调查及综防预警网络平台体系建设项目
湖北省农业科技创新中心资助项目(2011-620-003-03-04)
关键词
烟田
杂草种类
密度
频度
分布
tabacco fields
species of weeds
density
frequency
distribution
