Effects of tillage method and herbicide on cornfield weed community

Abstract

Abstract: By the method of community ecology,this paper surveyed the weed community in a cornfield at the Shenyang Experimental Station of Ecology,CAS,and studied the effects of tillage method and herbicide on the weed composition,species diversity,and biomass at the experimental site.The results showed that the dominant weed species in the cornfield were Eriochloa villosa,Abutilon theophrasti,Bidens frondosa and Commelina communis,of which,Eriochloa villosa had the highest important value.In non-tillage field without herbicide application,the weed community had larger biomass,higher richness(S) and concentration(C),but lower species diversity(D) and species evenness(J).Herbicide could decrease weed species and inhibit biomass growth significantly in non-tillage field.It was clear that tillage method and herbicide could affect the weed composition,diversity and stability significantly.

Key words: Weed community, Tillage method, Herbicide, Cornfield, Diversity

CLC Number:

S365

LIU Fangming, LIANG Wenju, WEN Dazhong . Effects of tillage method and herbicide on cornfield weed community[J]. Chinese Journal of Applied Ecology, 2005, 16(10): 1879-1882.

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