种植密度与施肥量对白城地区甜荞农艺性状及产量的影响

Effects of Planting Density and Fertilization Amount on Agronomic Characters and Yield of Sweet Buckwheat in Baicheng Area

探究白城地区甜荞生产的最佳种植密度和施肥量。采用4个种植密度和5个施肥量2个因素的随机区组设计,研究了不同种植密度和施肥量对甜荞农艺性状及产量的影响。结果表明,在低种植密度条件下株高随施肥量的增加而增加;各处理间主茎节数没有明显的差异;分枝数在低种植密度75万株/hm^(2)时随施肥量的增加而增加,各处理间差异不明显。株粒数、株粒重和千粒重在M1(75万株/hm^(2))密度条件下随着施肥量的增加而增加。株高在无施肥条件下随密度的增加而增加,在施肥量400 kg/hm^(2)时随密度的增加而减小;各处理间分枝数无显著的变化。综上,白城地区甜荞最适种植密度为125万株/hm^(2),最佳施肥量为300 kg/hm^(2)。

To explore the optimum planting density and fertilizer application rate for buckwheat production in Baicheng.A randomized block design with 4 planting densities and 5 fertilization rates was used to study the effects of different planting densities and fertilization rates on agronomic traits and yield of buckwheat.Results showed that under the low planting density,plant height enhanced with the increase of fertilizer application amount.The number of main stem nodes among treatments had no obvious difference.The number of branches enhanced with the increase of fertilizer application amount at the low planting density of 750000 plants/hm^(2),but the differences between treatments were not obvious.Under different densities,grain number per plant,grain weight per plant and 1000-grain weight enhanced with the increase of fertilizer application under M1 treatment.The plant height enhanced with the increase of density at no fertilizer application,and decreased with the increase of density at 400 kg/hm^(2)of fertilizer application.The number of branches did not change significantly among treatments.Thus,the optimum planting density of buckwheat in Baicheng was 1.25 million plants/hm^(2)and the optimum fertilization amount was 300 kg/hm^(2).