CAJ | 학술논문

采用倒置“W”形9点取样法，对湖南益阳、湖北蔡甸、江苏吴江、浙江金华、四川都江堰5个地区的莲藕田间杂草进行调查统计，结果表明：莲藕田间杂草共25种（含变种），隶属于19科、24属，其中禾本科、莎草科和雨久花科的杂草种类较多，共占杂草种类的36％；发生优势度较大的杂草为空心莲子草（ Alternanthera philoxe-roides）和浮萍（ Herba spirodelae）。基于物种优势度进行群落相似性聚类分析发现，湖南益阳与湖北蔡甸的莲藕田间杂草群落相似性最高，四川都江堰地区的莲藕田间杂草群落组成与其他4个地区的差异较大。
채용도치“W”형9점취양법，대호남익양、호북채전、강소오강、절강금화、사천도강언5개지구적련우전간잡초진행조사통계，결과표명：련우전간잡초공25충（함변충），대속우19과、24속，기중화본과、사초과화우구화과적잡초충류교다，공점잡초충류적36％；발생우세도교대적잡초위공심련자초（ Alternanthera philoxe-roides）화부평（ Herba spirodelae）。기우물충우세도진행군락상사성취류분석발현，호남익양여호북채전적련우전간잡초군락상사성최고，사천도강언지구적련우전간잡초군락조성여기타4개지구적차이교대。
A weed survey was conducted by sampling nine plots according to a “W” pattern in the lotus root production areas of Yiyang,Caidian,Wujiang,Jinhua and Dujiangyan regions.Twenty-five weeds ( including varieties) belonging to 24 genera of 19 families composed the predominant flora-Gramineae,Cyperaceae and Pontederiaceae weeds.The most frequent and dominant species were Alternanthera philoxeroides and Herba spirodelae.Community similarity cluster analy-sis based on species dominance showed that weed communities associated with lotus root fields from Yiyang and Caidian were very similar and that the weed community in Dujiangyan substantially different to those present in the other four regions.