湖南生态科学学报Issue(3)：17-21,5.
不同施肥处理的养分利用率及甘蔗效益研究
Nutrient Use Efficiency and Sugarcane Profit under Different Fertilization Treatments
摘要
Abstract
An experiment in latosolic red soil on Guangxi slope was conducted to discover the effects of different fertilization treatments on nutrient use efficiency, sugarcane growth, single stem weight, bio-mass yield,stem yield,brix and profit,to seek a fertilization mode with low cost and high profit and nutri-ent use efficiency. Method Five treatments were designed as follows, ( 1 ) sugarcane without fertilizer (CK),(2)sugarcane with regular chemical fertilizer(SF),(3)sugarcane with 80% of regular chemical fertilizer amount(SF80%),(4)sugarcane with 60% of regular chemical fertilizer amount(SF60%),(5) sugarcane with regular chemical fertilizer and farmmanure(SF+N). The sugarcane showed the greatest stem diameter,plant height,aboveground dry matter,biomass yield,stem yield,brix and profit in ( SF+N) treatment,respectively with 23. 93 mm,368. 6 cm,82. 78%,149. 92 t/ha,139. 58 t/ha,18. 83BX and 69 792. 45 Chinese yuan/ha,which were remarkably higher than those in other treatments. SF60%treatment brought about higher 4 . 87% P use efficiency and 1. 63% K use efficiency than those in SF treatment. Higher 42. 04% P use efficiency in (SF+N)treatment and higher 4. 12% K use efficiency in SF treatment were displayed than those in SF treatment. ( SF+N) treatment showed highest sugarcane yield and profit. Highest K and N use efficiency occured in SF80% and SF60% treatments respectively. So reduced fertilization modes are feasible in fertile soil on Guangxi slope. Especially for ( SF +N ) mode,it can produce greater sugarcane yield and profit because of its properties with higher nutrients use efficiency. 5tabs. ,9refs.关键词
施肥/养分利用率/甘蔗/效益Key words
fertilization/nutrient use efficiency/sugarcane/profit分类
农业科技引用本文复制引用
秦芳,俞月凤,何铁光,苏利荣,苏天明,张野,李婷婷,李琴,韦彩会,李忠义..不同施肥处理的养分利用率及甘蔗效益研究[J].湖南生态科学学报,2014,(3):17-21,5.基金项目
2014年度国家级引进国外技术、管理人才项目(编号:S20144500063),广西科学研究与技术开发计划项目(编号:桂科合1298014-18),广西农业科学院基本科研业务专项(编号:桂农科2012YZ24) （编号:S20144500063）
