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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。
In order to understand the suitable planting density of high-yield and high-sugar sugarcane Guiguo 30 in sugarcane planting area in Guangxi, and to provide supporting cultivation techniques for its popularization and application, five different planting varieties were planted in four different types of sugarcane planting areas in Guangxi in 2011 The results showed that with the planting densities of Guitang 30 increasing from 75 000 to 135 000 sprouts / hm2, the effective stem number per unit area increased, the yield of cane and sucrose content increased, the tillering rate and stem And the trend of decreasing was from 105.65 to 135.45 t / hm2, with the planting densities ranging from 105,000 to 135,000 buds / hm2. The yield per unit area of cane and sucrose content varied from 103.61 to 109.90 t / hm2 and 15.50 to 16.44 t / hm2, respectively, but the difference was not significant . When the planting density was 120,000 buds / hm2, the yield of cane and the content of sucrose per unit area were the highest, reaching 109.90 and 16.44 t / hm2, respectively. The optimum planting density of Guitang 30 in Guangxi is 105,000 ~ 135,000 buds / hm2, and the optimum planting density is 120,000 buds / hm2. However, the reaction of Guiguansan 30 to different planting densities differs in different types of cane areas. In accordance with local conditions.