耕作方法和除草剂对玉米田杂草群落的影响

应用生态学报 ›› 2005, Vol. 16 ›› Issue (10): 1879-1882.

耕作方法和除草剂对玉米田杂草群落的影响

刘方明^1,2, 梁文举¹, 闻大中¹

1. 中国科学院沈阳应用生态研究所, 沈阳 110016;
2. 中国科学院研究生院, 北京 100039

收稿日期:2004-11-26 修回日期:2005-03-24 出版日期:2005-10-15 发布日期:2005-10-15
通讯作者: 梁文举
基金资助:
国家自然科学资金资助项目(30270271).

Effects of tillage method and herbicide on cornfield weed community

LIU Fangming^1,2, LIANG Wenju¹, WEN Dazhong ¹

1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China

Received:2004-11-26 Revised:2005-03-24 Online:2005-10-15 Published:2005-10-15

摘要/Abstract

摘要： 应用群落生态学方法,在中国科学院沈阳生态实验站对玉米田杂草群落进行了调查研究,探讨了耕作方法和除草剂对杂草群落组成、多样性和生物量的影响.结果表明,玉米田优势种杂草为野黍、苘麻、大狼把草和鸭趾草,其中野黍重要值最高;免耕不施加除草剂处理6月下旬杂草生物量较大,5月末到8月中旬物种丰富度较高(S),7月1日和8月1日均匀度(J)较低,优势集中性(C)较高,均与常规施加除草剂处理有显著差异.施用除草剂可减少免耕玉米田杂草种类,抑制杂草生物量的增长.耕作方法和除草剂可对杂草群落组成、多样性及稳定性产生影响.

关键词: 杂草群落, 耕作方法, 除草剂, 玉米田, 多样性

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

中图分类号:

S365

刘方明, 梁文举, 闻大中. 耕作方法和除草剂对玉米田杂草群落的影响[J]. 应用生态学报, 2005, 16(10): 1879-1882.

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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