摘要
以甘蔗品种粤糖00-236为试材,通过2 a的盆栽试验,研究了在滴灌施肥与常规灌溉施肥下施用氮肥对甘蔗产量和品质的影响。结果表明,与常规灌溉施肥方式相比,滴灌施肥处理能显著促进甘蔗生长,增加蔗茎产量,其产量增幅为2007年19.5%～41.5%,2008年20.6%～36.8%;同时,滴灌施肥处理显著促进根系生长,根长和根表面积分别比常规处理增加41.0%～53.2%和41.7%～90.2%;当滴灌施氮肥的施用量达到常规用量的50%时,继续增加氮肥的施用量,甘蔗产量、蔗糖分、蔗汁锤度等都没有显著增加,甚至有下降的趋势。在甘蔗生产中,滴灌施肥技术是一种理想的水肥管理模式,同时,合理的施肥量也是一个必须引起重视的问题。
A two years＇ pot experiment of planting sugarcane YZ00-236,designed to have five treatments varying in two different N application methods（drip N fertigation and traditional application N）,was carried out to evaluate the effects of these treatments on the growth,yield and quality of sugarcane.The growth status of sugarcane at variable stages were measured,when the experiment were finishing,the cane yield and quality were measured too.The results obtained were as follows： compared with traditional way,drip N fertigation could significantly increase the cane yield,the increased data as 19.5%～41.5% in 2007 and 20.6%～36.8% in 2008,respectively.At the same time,the root length and root surface area would be increased significantly under drip fertigation,the increased data as 41.0%～53.2% and 41.7%～90.2%.When half dose of nitrogen application rate of conventional method through fertigation received the highest cane yield and improved the quality of sugarcane,then there have no increase or improving even reduce the cane yield and quality of sugarcane for excessive N use.Therefore,drip fertigation has some special advantages in sugarcane cultural since it provides the most effective way of supplying nutrients and water to the plant roots,and attention should be paid to the nitrogen application rate.
出处
《灌溉排水学报》
CSCD
北大核心
2010年第2期119-123,共5页
Journal of Irrigation and Drainage
基金
华南农业大学校长基金项目(2007K057)
农业部公益行业项目(200803030)
广西植物研究所基本科研业务费资助项目(桂植业09013)
关键词
滴灌施肥
氮肥
甘蔗
产量
品质
drip fertigation
nitrogen
sugarcane
yield
quality
