不同小麦品种对播娘蒿的影响

播娘蒿是黄淮麦区主要田间杂草,在管理粗放的麦田,播娘蒿密度可达100株·ｍ-2以上,严重影响了小麦的产量和品质。因此,对小麦-杂草复合体中杂草的生长发育规律进行研究,寻找降低草害的有效途径引起许多学者极大关注1,2],而目前有关防除麦田杂草的研究多集中于化学防治方面3]。然而,出于环境保护和经济成本上的考虑,化学除草受到了挑战。研究人员4,5]发现,不同物种在竞争力上存在差异,禾谷类作物属于竞争力很强的作物6],冬小麦及冬黑麦又是其中竞争力最强的物种。就小麦栽培种而言,存在着不同的品种类型,研究不同小麦品种对杂草的抑制作…

Effects of Different Wheat Varieties on Flixweed.

Effects of wheat varieties on flixweed were studied in a field experiment. The result showed that flixweed biomass, leaf area index and seed Production growing with different varieties were different. Flixweed growing with wheat varieties in a strong competitive ability was poor , wheat grain yield was higher. This trend enhanced with higher density of winter wheat, When wheat varieties in stronger competitive ability were planted in a field where many flixweeds existed , wheat yield loss caused by flixweed infestation could decrease.