甘蔗养分限制因子OPT试验研究  

OPT Experiment for Nutrient Limiting Factors of Sugarcane

作　　者：吴宇佳[1] 曾建华[1] 符传良 刘国彪[1] 谢良商[1] 

机构地区：[1]海南省农业科学院农作物遗传育种重点实验室,海南海口571100

出　　处：《湖南农业科学（下半月）》2014年第3期24-25,共2页

基　　金：国家科技支撑计划项目(2008BADA4B10)

摘　　要：在海南省儋州市进行甘蔗养分限制因子OPT试验,结果表明:OPT处理产量最高,达115.06 t/hm2,OPT施肥方案即施N 373 kg/hm2,P2O5 225 kg/hm2,K2O 563 kg/hm2为甘蔗生产的平衡施肥方法;甘蔗各生育期植株N、P、K含量变化为分蘖盛期>苗期>拔节期>收获期,且K>N>P;由产量结果确定出N、K肥为试验地甘蔗养分限制因子。An OPT experiment was conducted to study nutrient limiting factors of sugarcane in Danzhou City of Hainan Province. The results showed that the highest sugarcane yield was under the OPT treatment, which reached 115.06 t/hm2. The OPT fertilization scheme, namely the balanced fertilization method for sugarcane production was N of 373 kg/hm2, P205 225 kg/hmz, and K20 563 kg/hm2. The changes in contents of N, P and K in each growth period of sugarcane was in an order of tiUering period〉seedling period〉jointing period〉harvest period, and K〉N〉P. The sugarcane yield indicated that N and K were the main nutrient limiting factors of sugarcane in the experimental site.

关 键 词：甘蔗 OPT试验 养分限制因子 

分 类 号：S225.53[农业科学—农业机械化工程]