山西农业大学学报（自然科学版）2016，Vol.36Issue(6)：395-399,5.
旱地小麦深施磷肥对群体动态及产量形成的影响
Effect of deep application of phosphorus fertilizer on population dynamics and yield components of dryland wheat
摘要
Abstract
In order to explore the technology on application phosphorus fertilizer of dryland wheat ,field test was carried out to study the effect of different application depth under different phosphorus application on population dynamics and yield components of dryland wheat .The results indicated that :Increasing the amount of phosphorus ,the groups tiller number at different growth stages increased and spike number improved significantly at maturity stage .The grain fill‐ing rate of 0‐10 days and 15‐25 days after anthesis and 1000‐grain weight also increased .Compared to 20 cm depth phosphorus ,the 40 cm depth phosphorus prompted the tiller number before winter much more .It also improved the grain 1000‐grain weight accumulation rate in early filling stage (10‐15 days after anthesis) ,spike number and grain number per spike improved significantly .Increasing the amount of phosphorus ,dry matter at different growth stages increased ;yield and water use efficiency increased significantly .40 cm depth application of high phosphorus promoted dry matter accumulation in later grow th period obviously .It also improved yield and water use efficiency notably .In conclusion ,40 cm depth application of 150 kg・hm - 2 phosphorus fertilizer was beneficial to build a reasonable communi‐ty and improved the yield by increasing spike number and grain number per spike .关键词
旱地小麦/深施磷肥/群体动态/干物质量/产量形成Key words
Dryland wheat/Deep application of phosphorus fertilizer/Population dynamic/Dry matter/Yield compo-nents分类
农业科技引用本文复制引用
陈梦楠,高志强,孙敏,郝兴宇,杨珍平..旱地小麦深施磷肥对群体动态及产量形成的影响[J].山西农业大学学报（自然科学版）,2016,36(6):395-399,5.基金项目
公益性行业科研专项经费（201303104）；现代农业产业技术体系建设专项经费（CARS-03-01-24）；山西省科技攻关项目（20140311008-3）；农业部公益性行业科研专项（201503120）；国家科技支撑计划项目 （）
