中国水稻科学Issue(1)：85-92,8.DOI:10.16819/j.1001-7216.2016.5094
配方施肥及磷肥后移对单季稻磷素利用效率、产量和经济效益的影响
Effect of Formulated Fertilization and Postponed Application of Phosphorus Fertilizer on Phosphorus Utilization Efficiency,Grain Yield and Economic Ben-efit of Single-cropping Rice
摘要
Abstract
A field experiment was carried out to reveal the effects of conventional fertilization (CF),formulated fertilization(FF)and postponed application of phosphorus fertilizer(DAP)on phosphorus accumulation and its utiliza-tion efficiency,as well as grain yield and economic benefit in rice.The results showed that the phosphorus absorption and accumulation in rice of phosphorus in FF and DAP were higher than those in CF.And the contribution rate,ab-sorption efficiency,agronomic use efficiency and partial fertilizer productivity of phosphorus in FF and DAP increased significantly (P <0.05)compared with CF.Moreover,under the same phosphorus level,the phosphorus accumulation amount and net absorption amount of rice during the later growth period in T3 (basal P∶topdressed P = 7 ∶3)were 6.86% and 20.07% higher than those in T2 (P used as basal fertilizer).Meanwhile,the contribution rate,absorption efficiency,agronomic use efficiency,partial fertilizer productivity and physiological efficiency of phosphorus in T3 in-creased by 36.5 6%,23.10%,46.1 6%,7.09% and 18.25 %,respectively.Compared with T2 ,the grain yield and out-put-input ratio also increased by 7.09% and 7.04%.The results indicated that FF,especially DAP increased phosphor-us absorption and accumulation in rice during the growth duration,as well as the P utilization efficiency,grain yield and output-input ratio,which had a positive effect on increasing production and efficiency.关键词
配方施肥/磷肥后移/水稻/磷肥利用效率/产量Key words
formulated fertilization/postponed application of phosphorus fertilizer/rice/phosphorus utilization efficien-cy/yield分类
农业科技引用本文复制引用
李鹏,张敬智,魏亚,常江,郜红建,章力干,丁玉宇..配方施肥及磷肥后移对单季稻磷素利用效率、产量和经济效益的影响[J].中国水稻科学,2016,(1):85-92,8.基金项目
国家科技支撑计划资助项目(2012BAD20B05) （2012BAD20B05）
