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为了测定在通过增加冬小麦播量和减小行距的途径下,冬小麦播期和雀麦草侵害水平对雀麦草控制的效应,于美国俄克拉荷马州进行了试验。3个试验点中有2个试验结果是:播量和行距互作影响雀麦草的密度、生物量或籽粒产量。同晚播小麦相比较,增加9月播种的小麦之播量与行距对雀麦草的抑制效果最为显著。在其他2个试验中,把播量从67kg/ha增加到101 kg/ha,或把行距从22.5cm减小到15cm,则在各个雀麦草侵害水平下均提高了冬小麦产量。
In order to determine the effect of winter sowing and brindle infestation on brome control by increasing winter sowing and spacing, the experiment was conducted in Oklahoma, USA. Two of the three pilot tests showed that sowing and spacing affected the density, biomass or grain yield of bromegrass. Compared with late-sowing wheat, increasing sowing and spacing of September sowing of wheat showed the most significant inhibitory effect on brome grass. In the other two trials, increasing sowing from 67 kg / ha to 101 kg / ha or reducing the row spacing from 22.5 cm to 15 cm increased winter wheat production at each brindle level.