种植密度和行距对荞麦田杂草及荞麦产量的影响

Effects of Planting Density and Row Spacing on Weed Infestation and Yield of Buckwheat

通过调查荞麦田杂草,研究不同密度(B1:95万株/hm^2,B2:145万株/hm^2,B3:195万株/hm^2)和行距(A1:20 cm,A2:30 cm,A3:40 cm,A4:50 cm)对荞麦田杂草抑制情况和荞麦产量的影响。结果表明,在同一密度中随着行距的增大,杂草数和鲜质量增加,而在同一行距中随着密度的增加,杂草数和鲜质量多数表现为减少;荞麦产量在种植密度B2和行距A3时达到较高,为2 596. 7 kg/hm^2;在B2和B3同一种植密度下,行距A4的产量与行距A3没有显著差异,但后者抑制杂草效果更为显著。表明,选择适宜的种植密度和行距有利于控制田间杂草的生长,促进荞麦高产稳产。

The effect of different planting densities and row spacings on weed and yield of buckwheat by investigated under field conditions.Weed density and biomass increased with the increase of row spacing witin the same crop planting density,but both decreased when the planting density increased while manintaining the same row spacing.Buckwehat yield was highest at 2 596.7 kg/hm 2 at a planting density of 1.45 million plants/hm 2 and row spacing of 40 cm.Under the same planting density of B2 and B3,the yield at a row spacing of 50cm was not significantly different from that of row spacing A3,but the latter was more effective in inhibiting weeds.This suggested that choosing proper density and row spacing could effectively control the weed growth and achieve high and stable buckwheat production.