应用生态学报2017，Vol.28Issue(4)：1204-1210,7.DOI:10.13287/j.1001-9332.201704.028
长期耕作方式对小麦光合特性和产量的影响
Effects of long-term tillage practices on photosynthetic characteristics and grain yield of wheat
摘要
Abstract
A field experiment was conducted to study the effects of long-term tillage practices on photosynthetic characteristics of flag leaf,dry matter accumulation and its allocation,and grain yield,with a wheat cultivar,Jimai 22,in both 2013-2014 and 2014-2015 growing seasons.Four tillage practices,namely rotary tillage (R),plowing (P),strip rotary tillage and subsoiling at an interval of 2 years (SRS),and rotary tillage and subsoiling at an interval of 2 years (RS),were conducted in field for 9 years since 2007.The results showed that the net photosynthetic rate (Pn),transpiration rate (Tr),and stomatal conductance (gs) of flag leaves under SRS treatment were significantly higher than those of other treatments from 21 to 35 days after anthesis.The SRS treatment had higher average photosynthetically active radiation (PAR) capture ratio than RS and P treatments,while the lowest values were found under R treatment during grain-filling stage.Compared with the other treatments,the plants of SRS treatment had the highest accumulation of dry matter at maturity,the highest allocation of dry matter in grains,and the highest contribution ratio of dry matter from vegetative organs to grains after anthesis.The grain yield and water use efficiency of SRS treatment were significantly higher than those of the other treatments,and the water consumption amount of SRS treatment was significantly higher than that of both R and P treatments,with no significant difference from the RS treatment.Under the current experimental condition,it was suggested that SRS would be the most effective tillage practice to increase both grain yield and water use efficiency for winter wheat production.关键词
耕作方式/光合特性/干物质积累与分配/籽粒产量/水分利用效率Key words
tillage practices/photosynthetic characteristics/dry matter accumulation and allocation/grain yield/water use efficiency引用本文复制引用
何建宁,于振文,石玉,赵俊晔,张永丽..长期耕作方式对小麦光合特性和产量的影响[J].应用生态学报,2017,28(4):1204-1210,7.基金项目
本文由农业部现代小麦产业技术体系项目(CARS-3-1-19)、国家自然科学基金项目(31401334,31601243)和山东省科技发展计划项目(2014GNC111017)资助 This work was supported by the Project of Technology System in Modern Wheat Industry,Ministry of Agriculture,China (CARS-3-1-19),the National Natural Science Foundation of China (31401334,31601243) and the Project of Science and Technology Development of Shandong Province(2014GNC111017). （CARS-3-1-19）
