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为了解果蔗新品种桂果蔗1号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2016年分别在广西4个县蔗区对该品种进行了3.9万、4.2万、4.5万、4.8万、5.1万、5.4万株/hm~2等6个不同种植密度水平比较试验。结果表明:不同种植密度对桂果蔗1号株高、田间蔗汁锤度影响较小;茎径、商品蔗率随种植密度的增加而降低;茎产量、商品蔗产量、经济收入随种植密度的增加有先增后降的趋势。4.8万株/hm~2处理蔗产量最高,达到149 077.1kg/hm~2。商品蔗产量以4.8万、4.5万株/hm~2处理最高,分别达到144 325.3kg/hm~2和144 069.9kg/hm~2,经济纯收入以4.5万株/hm~2处理最高,达102 132.3元/hm~2;梢腐病的发病率为0.25%~0.89%,不同种植密度间没有明显的发生规律。桂果蔗1号在广西的适宜种植密度是4.5万株/hm~2,在实际生产中要因地制宜。
In order to understand the suitable planting density of the new sugarcane Guiguang sugarcane 1 in Guangxi sugarcane planting area and to provide the supporting cultivation technology for its popularization and application, in 2016, the varieties were enrolled in 4 counties in Guangxi Province respectively 39,000 and 42,000 , 45000, 48000, 51000, 54000 plants / hm ~ 2 six different planting density levels of comparative test. The results showed that different planting densities had little effect on the plant height of barley cane and the brix of barley field. The stem diameter and the product cane rate decreased with the increase of planting density. The stem yield, yield of cane, economic income with planting density The increase of the first increase and then decrease the trend. The yield of 48000 plants / hm ~ 2 treatment was the highest, reaching 149 077.1kg / hm ~ 2. The output of commercial sugarcane reached the highest at 48.325.3kg / hm 2 and 144 069.9kg / hm 2 with 48000 and 45000 plants / hm 2, respectively. The net economic income was highest at 45000 plants / hm 2 102 132.3 yuan / hm ~ 2; the incidence of shoot rot is 0.25% ~ 0.89%, there is no obvious difference between different planting density. The optimum planting density of Gui Gua No. 1 in Guangxi is 45 000 plants / hm ~ 2, which should be adapted to local conditions in the actual production.