固氮甘蔗新品种RB72-454引种及试验示范  

Introduction and Demonstration of RB72-4549(a New Sugarcane Variety) with Nitrogen Fixation

作　　者：周正邦[1] 龚德勇[1] 易代勇[1] 刘凡值[1] 谢惠珏[1] 

机构地区：[1]贵州省亚热带作物研究所,贞丰562200

出　　处：《贵州农业科学》2006年第6期76-79,共4页Guizhou Agricultural Sciences

基　　金：贵州省农业科技攻关项目"固氮甘蔗新品种RB72-454引种试验示范研究"[黔科合NGY(2003)039]

摘　　要：引进固氮甘蔗新品种RB72-454，于2003-2005年在贞丰、望谟坝、坡地进行田间氮肥敏感性、不同用种量、吨糖田土配套技术研究试验示范。结果表明：RB72-454施用尿素20kg／667m^2比F134（CK）施用尿素40kg／667m^2增产41．5％，蔗糖分提高1．24％（绝对值），单位面积产糖量增加59.5％；每667m^2用种量8000芽比10000芽增产7．5％，蔗糖分提高0．5个百分点，单位面积产糖量增加11．0％，节本增效336．4元／667m^2；吨糖田土配套技术集成实施产糖量达1066kg／667m^2，比F134增加47．9％；示范1333.3hm^2，平均比F134增产37．7％，蔗糖分提高1．18个百分点。单位面积产糖量增加49．0％，增收810元／667m^2，项目累计新增产值3960万元，取得经济效益2140．4万元。RB72-454, a new introduced sugarcane variety, was tested to investigate effects of different N and seed amount on its yield on the ground and slope soils in Zhenfeng and Wangmo counties during 2003-2005. The results show that the yield, cane sugar and sugar content of RB72-454with 20kg/667m^2 of N are 41.5%, 1.24% and 59.5% higher than those of F134 （CK） with 40kg/667m^2 of N respectively, the yield, cane sugar and sugar content of 8000 buds/667m^2 are 7. 5%, 0.5 % and 11.0 % higher than those of 10000 buds/667m^2 separately and the former can save 336, 4 yuan/667m^2 compared with the latter. The sugar yield of RB72-454 with a comprehensive cultivation technique is up to 1066kg/667m^2 , 47.9% higher than F134 and the average yield, cane sugar and sugar content of RB72-454 in 1333.3ha are 37.7%, 1.18% and 49.0% higher than F134 respectively and the former can increase the income of 810yuan/667m^2.

关 键 词：芝謦 RB72-454 氯肥敏感性 试验示范 

分 类 号：S566.103.7[农业科学—作物学]