• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Asian Journal of Plant Sciences >Using Plant Density to Increase Competition Ability in More and Less Competitive Wheat Cultivars with Wild Oat
【24h】

Using Plant Density to Increase Competition Ability in More and Less Competitive Wheat Cultivars with Wild Oat

机译：利用植物密度提高竞争能力越来越弱的野生燕麦小麦品种的竞争能力

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The effects various densities of wild oat and wheat on the growth and reproductive output of wheat and growth of wild oat were investigated in field study in 2004. The experiment was established as a factorial combination of wheat varieties (Rooshan and Niknejad) wheat density (recommended, recommended +25% and recommended+50%) and wild oat (0, 25, 50 and 75 plants m-2) densities. The effect of wild oat density on wheat yield loss and the effect of wheat density on wild oat biomass were described with a rectangular hyperbola model. The presence of wild oat in wheat reduced grain yield of wheat, number of tiller, number of spike m-2 and the magnitude of this reduction was dependent on weed density. Increasing the density of wheat significantly reduced the unpleasant effects of wild oat on wheat. Wild oat biomass was decreased, as crop density increased. The maximum grain yield of Niknejad and Rooshan were achieved at its recommended +25% and recommended wheat density, respectively and increased density due to increase inter specific competition decrease grain yield at two cultivars. As wild oat density increased, Number of tiller per plant, spike m-2 decreased. The results indicated that higher densities of wild oat had heights negative effect on wheat yield and higher wheat densities were able to suppress biomass of this weed species.
机译：在2004年的田间研究中，研究了不同密度的野生燕麦和小麦对小麦生长和繁殖产量以及野生燕麦生长的影响。该实验是作为小麦品种（Rooshan和Niknejad）小麦密度的因子组合（推荐）进行的。 ，推荐+ 25％和推荐+ 50％）和野生燕麦（0、25、50和75种植物m -2 ）密度。用矩形双曲线模型描述了野生燕麦密度对小麦产量损失的影响以及小麦密度对野生燕麦生物量的影响。小麦中野燕麦的存在降低了小麦的籽粒产量，分till数，穗数m -2 ，且这种降低的幅度取决于杂草密度。增加小麦的密度显着降低了野生燕麦对小麦的不利影响。随着作物密度的增加，野燕麦的生物量减少。 Niknejad和Rooshan的最大籽粒产量分别达到建议的+ 25％和推荐的小麦密度，由于种间竞争加剧而增加的密度降低了两个品种的籽粒产量。随着野燕麦密度的增加，单株分till数，穗m -2 降低。结果表明，较高密度的野燕麦对小麦的产量产生高度的负面影响，较高的密度可以抑制该杂草的生物量。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号