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期 刊 ：植物保护学报 1999年

关键词：看麦娘；种群消长；生物学基础；种间竞争；

Keywords:Alopecurus, population dynamics, biological bases, interspecific competition,

摘 要 ：以麦田杂草看麦娘和日本看麦娘为材料，比较了两种杂草在生长速率、生育期、繁殖能力和资源利用能力等生物学特性差异。结果表明，日本看麦娘的分蘖数、主茎叶龄和株高分别是看麦娘的１．１７、１．１５和１．２６倍。与看麦娘相比，日本看麦娘出苗期早６天，成熟期晚６天，全生长期长１２天；看麦娘的单穗籽实数和繁殖系数高于日本看麦娘，但受低成穗率和籽这萌发率限制，其繁殖能力仍低于日本看麦娘８．８％。置换系列试验表明，日

Abstract:Alopecurus aequalis Sobol. and A. japonicus Steud. were two noxious weeds which grow in wheat fields in the agricultural regions with rice-wheat cropping system. Experiments were conducted to compare the differences of biological characteristics such as g

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