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通过分析不同种植密度下复播荞麦生育期、农艺性状、产量及干物质积累的变化,探讨新疆麦茬复播荞麦合理栽培密度。研究结果表明:种植密度对荞麦生长发育有显著影响,对生育时期、节间长、节数、分枝数、千粒重等性状影响较小,对产量及其构成因素影响较大。随种植密度增大,株高升高,植株叶片数减少,单株干物质积累量降低,单位面积土地干物质积累量在种植密度增大时先升高但在密度超过120万株/hm~2后下降,产量同样在种植密度升高时先升高但超过120万株/hm~2后降低;奇台荞麦在新疆麦茬复播的合理栽培密度为120万株/hm~2,在此密度下产量最高综合表现最好。
By analyzing the changes of growth stage, agronomic traits, yield and dry matter accumulation of sowing buckwheat at different planting densities, the reasonable cultivation density of sowing buckwheat in Xinjiang wheat stubble was discussed. The results showed that the planting density had a significant effect on the growth and development of buckwheat and had little effect on the growth period, internode length, number of nodes, branch number, thousand-grain weight and other factors, but had a great influence on the yield and its components. With the planting density increased, plant height increased, the number of plant leaves decreased, the dry matter accumulation per plant decreased, the dry matter accumulation per unit area of the land increased first when the planting density increased but at a density of more than 1.2 million plants / hm 2 And then decreased. The yield increased at the same time when the plant density increased, but decreased after more than 1.2 million plants / hm ~ 2. The reasonable planting density of Qitai buckwheat planted in Xinjiang was 1.2 million plants / hm ~ 2, The highest yield under the best overall performance.