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首页> 外文期刊>Indian Journal of Weed Science >Competitive ability of wild oats (Avena ludoviciana Dur.) and broad leaf weeds with wheat in relation to crop density and nitrogen levels
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Competitive ability of wild oats (Avena ludoviciana Dur.) and broad leaf weeds with wheat in relation to crop density and nitrogen levels

机译：野燕麦（Avena ludoviciana Dur。）和阔叶杂草与小麦的竞争能力与作物密度和氮含量的关系

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Field experiments were conducted at the experimental area of Punjab Agricultural University, Ludhiana during rabi seasons of 1998-99 and 1999-2000 in order to study the competitive behaviour of wild oats and broad leaf weeds with wheat raised on loamy sand soil. Two seed rates (100 and 150 kg ha~(-1)) and three nitrogen levels (120, 150 and 180 kg ha~(-1)) were kept in main plots and four weed competition treatments i. e. competition with wild oats alone, with broad leaf weeds alone, with both andno competition (weed-free) in sub-plots. The differences in grain yield of wheat with seed rates were non-significant during both the years. Among weed competition treatments, association of wild oats alone or both types of weeds with wheat resulted in significantly more reduction in grain yield than alone broad leaf weeds. On an average, 17.0, 36.6 and 45.1 percent reduction in grain yield of wheat was observed with competition of only broad leaf weeds, only wild oats and both, respectively.
机译：为了研究野生燕麦和阔叶杂草与在壤土沙质土壤上培育的小麦的竞争行为，在卢迪亚纳旁遮普农业大学的实验区于1998-99年和1999-2000年的狂犬病季节进行了田间试验。在主要地块中保持两种种子率（100和150 kg ha〜（-1））和三个氮水平（120、150和180 kg ha〜（-1）），并进行四种杂草竞争处理。 e。仅与野燕麦竞争，仅与阔叶杂草竞争，并且在子样地中都没有竞争（无杂草）。在这两年中，小麦籽粒产量与种子率的差异均不显着。在杂草竞争处理中，单独的野生燕麦或两种类型的杂草与小麦的结合比单独的阔叶杂草导致的谷物产量显着降低。平均而言，仅阔叶杂草，仅野生燕麦和两者的竞争均使小麦的谷物产量分别降低了17.0％，36.6％和45.1％。

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