不同种植行距对干旱半干旱区荞麦农艺性状及产量的影响

Effects of Different Row Spacing on Agronomic Characters and Yields of Buckwheat in Arid and Semi-arid Regions

为筛选出白银市干旱半干旱区荞麦的适宜种植行距,以平荞2号为指示品种,研究分析了不同种植行距对荞麦主要性状及产量的影响。结果表明,不同行距处理与荞麦农艺性状及产量指标的相关性从大到小的顺序依次为株高(r=0.774**)、分枝数(r=0.623*)、产量(r=0.358)、主茎节数(r=0.312)、千粒重(r=-0.131)、单株粒重(r=-0.354)。总的来看,行距与株高、分枝数、产量有较高的相关性。播量120万粒/hm2的条件下,种植行距为25 cm时荞麦折合产量最高,为2191.20 kg/hm2,与行距为20、30 cm的处理差异均不显著,与行距为15 cm的处理差异显著。

In order to screen out the suitable row spacing for the arid and semi-arid buckwheat production in Baiyin City,study was carried out to investigate the influence of different row spacing on the agronomic characters and yield of buckwheat.The results showed that correlation between different row spacing treatments and agronomic traits or yield parameters of buckwheat was in descending order as plant height(r=0.774**)>number of branches(r=0.623*)>yield(r=0.358)>number of main stem nodes(r=0.312)>thousand-grain weight(r=-0.131)>plant grain mass(r=-0.354).Different row spacing had a significant correlation with plant height,number of branches and yield.Under the seeding density of 1.2 million seeds/ha,the yield of buckwheat was the highest when the row spacing was 25 cm,i.e.,2191.20 kg/ha which was not significantly different from those of the 20 cm and 30 cm row spacing treatments,respectively but was significantly different from that of the 15 cm row spacing treatment.