| 达州市烟田杂草种类及群落数量分析 |
| |
| 引用本文： | 周小刚,杨兴有,阳苇丽,尹宏博,周开绪,何正川,严占勇,魏建钧,侯涛,杨吉光,赵浩宇.达州市烟田杂草种类及群落数量分析[J].杂草科学,2016(2):12-16. |
| |
| 作者姓名： | 周小刚 杨兴有 阳苇丽 尹宏博 周开绪 何正川 严占勇 魏建钧 侯涛 杨吉光 赵浩宇 |
| |
| 作者单位： | 1. 四川省农业科学院植物保护研究所/农业部西南作物有害生物综合治理重点实验室,四川成都,610066;2. 四川省烟草公司达州市公司,四川达州,635000 |
| |
| 基金项目： | 四川省烟草专卖局科技项目(编号201302004) |
| |
| 摘 要： | 采用杂草优势度七级目测法对四川省达州市烟田杂草的种类、危害程度和群落特点进行调查。结果表明,达州市烟田杂草共有36科127种,其中优势杂草为马唐和空心莲子草。根据草害综合指数进行聚类分析,杂草群落可分为马唐+尼泊尔蓼+空心莲子草+看麦娘+繁缕+酸模叶蓼+辣蓼和马唐+空心莲子草+铁苋菜+光头稗+无芒稗+牛筋草2个聚类群。主成分分析结果表明,第Ⅱ聚类群的各杂草种在群落中的分布更集中,且优势杂草间相关性更高。
|
| 关 键 词： | 烟田 杂草群落 聚类分析 主成分分析 |
Weed Species and Community Quantitative Analysis in Tobacco Fields of Dazhou |
| |
| Abstract: | Weed species,harm degree and distribution characteristics in tobacco fields in Dazhou were determined by a seven-point scale through weed dominance.The results showed that a total of 127 weeds belonging to 36 families were the dominant flora—Digitaria sanguinalis and Alternanthera philoxeroides.Hierarchical cluster analysis implied that weed community could be divided into two groups—D.sanguinalis+Polygonum nepalense+A.philoxeroides+Alopecurus ae-qualis+Stellaria media+P.lapathifolium+P.flaccidum and D.sanguinalis+A.philoxeroides+Acalypha australis+Echinochloa colonum+E.crusgalli +Eleusine indica based on the weed composite indexes.According to the principal component analysis,the correlation of dominant weeds in group II groupeding weeds was higher than that that in groupⅠ. |
| |
| Keywords: | tobacco field weed community hierarchical cluster principal component analysis |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
