种植密度对饲用甜高粱生长发育及产量的影响

Influences of Sowing Density in Growth and Yield of Hybrid Sweet Sorghum

试验研究了不同种植密度对饲用甜高粱杂交种“天青一号”生长发育及产量的影响。结果表明,不同种植密度下株高、叶龄、LAI和干物质积累均存在差异,且产量受种植密度影响较大。综合分析,在混和肥总量为156.3㎏/hm2的施肥水平下,种植密度为17.5万株/hm2时,干物质积累量较大,可较好地协调群体与个体的生长,达到较高的产量。

Influences of sowing density on growth and yield of Hybrid sweet sorghum were tested. The results indicated that plant height, leaf age, LAI and accumulation of dried matter existed difference under different sowing density, especially sowing densities had the great effects on yield. General analysis showed that the treatment of sowing density 175 000 plants/hm^2 and the blend fertilization level of 156.3 kg/hm^2 was better not only for growth but also for yield.