不同磷背景土壤磷素用量对烤烟农艺性状及生物量的影响  

Effects of Phosphorus Levels on Agronomic Traits and Biomass of Flue-cured Tobacco Under Different Soil Phosphorus Backgrounds

作　　者：刘云 王程栋[2] 程朝晖 雷超 王宾刚 刘伟[2] 李东阳 LIU Yun;WANG Cheng-dong;CHENG Zhao-hui;LEI Chao;WANG Bin-gang;LIU Wei;LI Dong-yang(Baoji Tabacco Company,Baoji Shaanxi 721004;Tobacco Research Institute of CAAS)

机构地区：[1]宝鸡市烟草公司,陕西宝鸡721004 [2]中国农业科学院烟草研究所,陕西宝鸡721004

出　　处：《现代农业科技》2018年第19期1-3,6,共4页Modern Agricultural Science and Technology

基　　金：宝鸡烟叶工业可用性提升的关键技术研究

摘　　要：为研究不同磷背景土壤磷素用量对烤烟农艺性状及生物产量的影响,通过田间试验,采用"3414"试验磷因素处理,调查烟草农艺性状,在打顶期测定各部位样品中磷素含量,计算不同磷含量土壤磷吸收效率。结果表明,不同磷背景土壤磷素用量对烤烟农艺性状影响不同;中、低磷土壤背景条件下,施用氮、钾可以促进烟株对土壤中磷的吸收;而在高磷土壤背景条件下,氮、钾对烟株吸收磷没有明显的促进作用;在低磷和高磷地块,增加磷素用量可以增加烟田的整体和叶片生物量;低磷地块增加磷素用量可增强植株对磷素的吸收;而在中磷和高磷地块,增加磷素用量反而会降低植株对磷素的吸收效果;低磷、高磷地块单位施磷量对烟叶生物量贡献较大,且随施磷量的增加贡献越小。In order to study the effects of phosphorus levels on agronomic traits and biological yield of flue-cured tobacco under different soilphosphorus backgrounds,the phosphorus factor of ＂3414＂ test was treated to investigate the agronomic traits of tobacco,and the phosphorus content inhe samples of all parts was measured at topping stage,and the phosphorus absorption efficiency of soil with different phosphorus contents wascalculated. The results showed that the effect of phosphorus level on agronomic traits was different in different phosphorus background soil. Under thebackground of middle and low phosphorus soil,the application of nitrogen and potassium could promote the absorption of phosphorus in soil by tobaccoplants. Under the background of high phosphorus soil,nitrogen and potassium had no obvious promoting effect on phosphorus absorption of tobaccoplants. In low-phosphorus and high-phosphorus plots,the whole and leaf biomass of tobacco field increased as the increasing the amount of phosphorus.ncreasing the amount of phosphorus in low phosphorus plots could enhance the absorption of phosphorus by plants. And increasing the amount ofphosphorus in the middle and high phosphorus plots could decrease the absorption of phosphorus by plants. The contribution of per unit phosphorus to the biomass of tobacco leaves in low phosphorus and high phosphorus plots was greater,and the contribution was lower with the increasing of phosphorus.

关 键 词：烤烟 磷肥 农艺性状 生物量 

分 类 号：S572[农业科学—烟草工业] S147.5[农业科学—作物学]