Weed Species Diversity and Influencing Factors in Citrus Producing Areas in Zhejiang Province
The weed community structure of 34 citrus orchards in Quzhou and Taizhou,Zhejiang Province,was investigated systematically.According to the importance value of species,it was determined that the dominant weeds in the main citrus producing areas in Zhejiang province were Digitaria sanguinalis,Eleusine indica,Echinochloa crus-galli,Acalypha australis,Alter-nanthera philoxeroides,Setaria viridis,Erigeron canadensis,Cyperus iria,Persicaria lapathifo-lia,Solanum nigrum,Cynodon dactylon,Oxalis corniculata,Trigastrotheca stricta,Commeli-na communis,Parthenocissus tricuspidata,Lactuca indica,Ageratum conyzoides,Sonchus ol-eraceus,Portulaca oleracea and Imperata cylindrica.Among them,D.sanguinalis had the lar-gest importance value of species with the highest occurrence rate in the advantageous citrus pro-ducing areas of Zhejiang Province.It was found that the weed community structure in advanta-geous citrus producing areas in Zhejiang Province was mainly influenced by environmental fac-tors such as precipitation,annual average temperature,longitude and latitude,and altitude through canonical correspondence analysis.
万方数据
维普
