施氮次数对甘蔗干物质积累、产量及品质的影响  

Effect of application times of nitrogen fertilizer (^(15)N) on dry matter accumulation,yield and quality in sugarcane

作　　者：韦剑锋[1,2] 罗艺[3] 米超[3] 蓝立斌[3] 陈超君[3] 熊建文[1] 梁和[3] 

机构地区：[1]广西工学院鹿山学院,广西柳州545616 [2]广西工学院,广西柳州545006 [3]广西大学农学院,广西南宁530005

出　　处：《广东农业科学》2011年第20期57-59,共3页Guangdong Agricultural Sciences

基　　金：广西自然科学基金(桂科自0832051)

摘　　要：以新台糖22号(ROC22)为试材,以不施氮肥为对照,设T1(尿素5 g/盆作基肥1次施用)、T2(尿素作基肥2.5 g/盆和分蘖肥2.5 g/盆2次施用)及T3(尿素作基肥1.5 g/盆、分蘖肥1.5 g/盆和攻茎肥2 g/盆3次施用)3个处理,研究了氮肥不同施用次数对甘蔗干物质积累、产量及品质的影响。结果表明,随氮肥施用次数的增加,甘蔗干物质积累量、产量及产糖量显著增加,但蔗糖分含量略有下降;氮肥不同施用次数对甘蔗各器官、各生长阶段干物质积累的影响有明显差异。To take no nitrogen fertilizer as the control,three treatments were desiged with equal amount nitrogen of 5g 15N-labeled urea/pot but applied in 1, 2 and 3 splits respectively, to study the effects of application times of nitrogen fertilizer on dry matter accumulation, yield and quality in sugarcane varieties ROC22. T1 received 1 split which whole nitrogen of 5g/pot was applied at sowing time; T2 received 2 splits which 2.5g/pot nitrogen at sowing time and 2.5g/pot at tillering stage, respectively; T3 received 3 splits which 1.5g/pot at sowing time, 1.5g/pot at tillering stage and 2.0g/pot at elongation stage, respectively. The results were as follows： with increase the times of nitrogen fertilizer application, dry matter accumulation, stalk yield and sugar yield of sugarcane inereased significantly, while sucrose content in sugarcane stalk decreased slightly. The effect of different application times of nitrogen fertilizer on dry matter accumulation was significant differences in organs and growth stages of sugarcane.

关 键 词：甘蔗 氮肥 施用方式 干物质积累 产量 品质 

分 类 号：S566.106[农业科学—作物学]