摘要：进行N、P、K缺素试验,测算出三要素土壤原料蔗生产能力每公顷分别为69510kg、61650kg、65640kg。根据广西旱地甘蔗模式施肥公式,计算出针对该蔗区目标产量每公顷达到90000kg时,N、P2O5、K2O三要素吸收参数分别为179.27kg、274.94kg、217.56kg,根据GB15063-2001复混肥料技术标准,初步设计针对该蔗区甘蔗专用肥配方养分总量为30%,N∶P2O5∶K2O=8∶12∶10。依此配方生产样肥在该蔗区进行肥效验证,比对照增产、增糖分别为21.4%、0.43%(绝对值)。

摘要：进行N、P、K缺素试验,测算出三要素土壤原料蔗生产能力hm2分别为64065kg、71280kg、69690kg,根据广西旱地甘蔗模式施肥公式,计算出针对该蔗区目标产量达到90000kghm-2时,N、P2O5、K2O三要素吸收参数-hm2分别为226.91kg、181.55kg、181.42kg,根据GB15063-2001复混肥料技术标准,初步设计针对该蔗区甘蔗专用肥配方养分总量为26%,N、P2O5、K2O=10:8:8。依此配方生产样肥在该蔗区进行肥效验证,比对照增产、增糖分别为21.54%、0.78%(绝对值)。确定针对桂中部分蔗区的甘蔗专用肥配方,提供生产企业进行产业化生产与推广应用。

摘要：为了研制适合广西不同蔗区使用的甘蔗专用肥,在采样检测分析南宁市部分蔗区土壤养分状况的基础上,进行N、P、K缺素试验,测算出三要素土壤原料蔗生产能力分别为64.275、71.445和64.800t/hm2,根据广西旱地甘蔗模式施肥公式,计算出甘蔗产量达到90.000t/hm2时,对N、P2O5、K2O的需要量分别为225.07、179.95和225.06kg/hm2,参考GB15063-2001复混肥料技术标准,初步设计甘蔗专用肥配方养分总量为28%,N∶P2O5∶K2O=10∶8∶10。依此配方生产样肥在蔗区进行肥效验证,比对照增产、增糖分别为21.47%、0.65%(绝对值),增产极显著。由此确定南宁市部分蔗区的甘蔗专用肥配方,可提供给生产企业进行产业化生产与推广应用。

摘要：[目的]研究优良甘蔗新品种桂糖35号的施肥管理技术,优化施肥方案。[方法]采用四元二次正交旋转组合设计方法,研究下种量、氮肥、磷肥及钾肥4个因素对桂糖35号产量的影响,建立数学模型,优化施肥方案。[结果]各栽培因子对桂糖35号甘蔗产量的影响顺序是磷肥>氮肥>钾肥>下种量;只要满足下种量103 462.50～105 540.00芽/hm2,施尿素652.65～801.30 kg/hm2,施磷肥1 461.83～1 523.70 kg/hm2,施钾肥453.23～477.60 kg/hm2,即可获得87.92 t/hm2以上的甘蔗产量。[结论]该研究可为桂糖35号在不同生态区域研究制定高效栽培管理方案提供理论参考依据。

摘要：[目的]为了探索减少人工劳动强度、适应当前农村劳动力生产现状的甘蔗粗放式种植栽培管理方法。[方法]以广西当前的主栽品种新台糖22为材料,设计6种种植栽培管理技术处理,从农艺性状、蔗茎产量、甘蔗品质及经济效益等方面研究对甘蔗产量、品质和种植效益的影响。[结果]以传统耕作方法管理的处理获得最高蔗茎产量,取得最好农业经济效益,但与其他粗放式栽培管理处理的蔗茎产量间没有达到显著水平。[结论]在减少部分人工劳动投入的前提下,开展甘蔗粗放式种植栽培管理,可以取得较好的经济效益。

摘要：[目的]探讨地下滴灌对几个桂糖新品种生长及产量、质量的影响,以便为新品种的推广应用及高产栽培提供参考。[方法]每个品种种一个小区,各小区都分为滴灌和不滴灌(对照)2个处理,采用对比法设计,不设重复。[结果]滴灌处理平均产量115.91 t/hm2,比对照96.18 t/hm2增产19.73 t/hm2,增长20.5%,差异极显著;品种间产量最高的是GT31,其次为GT34,所有桂糖新品种均高过对照种ROC22。滴灌平均甘蔗蔗糖分为14.68%,比对照14.83%少0.19%(绝对值),差异显著。滴灌处理的经济效益极显著,较对照增长15.2%;品种间滴灌效益增长率最高的是GT31,最低的是ROC22,所有参试桂糖新品种滴灌效益增长率均高过ROC22。[结论]在滴灌条件下,甘蔗产量极显著高于非滴灌的对照,经济效益极显著,而甘蔗蔗糖分则略有下降;几个参试桂糖新品种对水分的敏感性超过对照种ROC22。

摘要：[Objective] This paper discussed the influences of surface drip irrigation on the growth, yield and quality of several new species of Guitang, in order to provide references for the promotion of new species and high-yield cultivation. [Method] One species is planted in each region, and there were two controls dripping technology or no-dripping technology in each region. [Results] The average yield of dripping-pro- cessed land was 115.91 t/hm2, which was 19.73 t/hm2 higher than the control. The maximum output was GT31, followed by GT34. The output of all Guitang new species was higher than the control ROC22. The average sucrose of dripped sug- arcane was 14.68%, which was 0.19% less than the control of 14.83%. The drip- ping technology was economically beneficial, rising by 15.2% compared with the control. The highest dripping efficiency was GT31, while the lowest one was ROC22. The increasing ratios of drip irrigation efficiency of the tested new Guitang species were higher than ROC22. [Conclusions] Under the drip irrigation condition, the sugarcane yield was extremely higher than the control of non-dripping irrigation, and the economic efficiency was significant. However, the sugar in the sugarcane declined slightly. The sensitivity of several new Guitang species to water was higher than the control ROC22.