密度对夏直播花生光合特性及产量的影响  

Effects of Plant Density on Photosynthetic Characteristics and Yield in Summer-planting Peanut

作　　者：高飞[1] 翟志席[1] 王铭伦[2] 

机构地区：[1]中国农业大学农学与生物技术学院,北京100094 [2]青岛农业大学/山东省旱作农业技术重点实验室,山东青岛266109

出　　处：《中国农学通报》2011年第9期320-323,共4页Chinese Agricultural Science Bulletin

基　　金：国家科技支撑计划(2006BAD21B04;2009BADA8B03);国家现代花生产业技术体系建设专项

摘　　要：在田间试验条件下,采用覆膜栽培研究了密度对夏直播花生光合特性及产量的影响,利用LI-6400便携式光合作用测定仪,采用开放式气路测定了花生功能叶片的净光合速率、胞间CO2浓度、气孔导度等相关指标。研究结果表明,在此试验田肥力条件下,密度为15万穴/hm2时,叶面积系数、叶片净光合速率、饱果率和果重最高,荚果产量和经济系数较其他密度处理显著提高。研究认为,在此试验条件下,覆膜夏直播花生的适宜密度为15万穴/hm2。Under field condition,the effects of plant density on photosynthetic characteristics and yield of summer-planting peanut were studied by using the technology of film mulching cultivation.The net photosynthesis rate,intercellular CO 2 concentration and stomatal conductance were measured with Li-6400 Portable Photosynthesis System with an open flow gas exchange system.Among all treatments,the leaf area index,the net photosynthesis rate,as well as the number of pods per plant,seed weight,pod yield,economic coefficient were all increased mostly at the planting density 15.0 × 10 4 holes/hm 2.Therefore,under the conditions of this study,the suggested plant density would be 15.0×10 4 holes /hm 2 for summer-planting peanut.

关 键 词：花生 密度 光合特性 产量 

分 类 号：S3[农业科学—农艺学]