种植密度对甜高粱农艺性状、产量及含糖量的影响

Effect of Different Planting Density on Agronomic Traits, Yield and Sugar Content of Sweet Sorghum

分析了4个种植密度(8.34、12.51、16.68和25.01万株/hm^2)对甜高粱品种BJ0603的主要农艺性状、生物产量及含糖量的影响。结果表明:种植密度为25.01万株/hm^2时,甜高粱株高、茎粗、节数、分蘖数、叶片数等农艺性状均较低;种植密度为12.51万株/hm^2时单株重最大;16.68万株/hm^2是武威地区BJ0603甜高粱最适种植密度,可获得最大生物产量和收获品质;甜高粱种植密度对其糖锤度影响不大。

The effect test of four different planting densities（834000, 125100, 166800 and 250100 plants/ha） on the agronomic traits, biological yield, and sugar content of sweet sorghum BJ0603 was conducted. The results showed： height, stem diameter, node number, tiller number, leaf number and other agronomic traits were lowest when planting density was 250,100 plants/ha. The single plant weight was highest when planting density was125,100 plants/ha. The optimum planting density of sweet sorghum BJ0603 in Wuwei was 166,800 plants/ha,which reached maximum biological yield and harvest quality. Different planting density of sweet sorghum has little effect on sugar brix.