【摘要】 为了解高产高糖甘蔗新品种桂糖30在广西蔗区的适宜种植密度,为其推广应用提供配套栽培技术,于2011年分别在广西4个不同类型蔗区对该品种进行了5种不同种植密度水平比较试验,结果表明,桂糖30随着种植密度从7.5万芽/hm2增加到13.5万芽/hm2,单位面积有效茎数、蔗茎产量和蔗糖含量有提高的趋势,分蘖率和茎径则有下降趋势;其中种植密度是10.5万～13.5万芽/hm2,单位面积蔗茎产量和蔗糖含量分别在103.61～109.90 t/hm2和15.50～16.44 t/hm2之间变化,但差异不显著。种植密度为12万芽/hm2时的单位面积蔗茎产量和蔗糖含量最高,分别达到109.90、16.44 t/hm2。桂糖30在广西的适宜种植密度是10.5万～13.5万芽/hm2,最适种植密度为12万芽/hm2,但不同类型蔗区桂糖30对不同种植密度的反应存在差异,在实际生产中要因地制宜。更多还原

【Abstract】 In order to know about the optimum of planting density of high sugar and cane yield of sugarcane variety Guitang(GT) 30,and provide a cultivation technique for promotion in Guangxi.Five different planting density levels of GT 30 planted were conducted in 4 different sugarcane plantation regions in 2011.The results were showed that millable canes,can and sugar yield was increase by planting densities were from 75 000 to 135 000 buds/hm2,but tillering rate and stem diameter were decrease.The planting density was on range of 105 000 to 135 000 buds/hm2 getting the cane and sugar yield of 103.61~109.90 t/hm2 and 15.50～16.44 t/hm2,respectively,was not difference significant.Planting density of 120 000 buds/ hm2 was got the highest of cane and sugar yield by109.90 t/hm2 and 16.44 t/hm2,respectively.Conclusion: sugarcane GT 30 was suitable for planting density from 105 000 buds/hm2 to 135 000 buds/hm2,with the optimum of 120 000 buds/hm2.But different types of sugarcane plantations were differences by planting density,it should be considered in the practical production to local conditions.更多还原