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作 者 ：尹力初,蔡祖聪.

期 刊 ：中国生态农业学报 2005年 13卷 3期 页码：57-59

关键词：长期定位施肥；小麦田；杂草；生物多样性；

Keywords:Long-term located fertilization, Wheat field, Weed, Biodiversity,

摘 要 ：长期定位试验研究不同施肥小麦苗期田间杂草生物多样性的变化结果表明，不同施肥处理田间杂草种类与各杂草相对丰度均发生变化，且各处理间Shannon多样性指数(H′)、Shannon均匀度指数(E)和Margalef物种丰富度指数(D_MG)均存在差异，其原因可能是由于不同施肥造成各处理间土壤养分的不同，各种杂草的生长因而受其不同影响所致。

Abstract:The change of the weed biodiversity in wheat field under a long-term located fertilization was studied.The results show that under different fertilization treatments,the species and relative abundance of weeds are changed,the diversity indices of Shannon‘s H,Shannon‘s E and Margalef‘s D_MG are different.It is due to the different amounts of available soil nutrients which maybe have different impacts on the growth of different weeds.

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