稀植留叶枝棉花的光合特性和产量品质研究  

Studies on Photosynthetic Characteristics Yield and Quality of Sparse Planting Cotton-retaining-leafy-shoots

作　　者：李伶俐[1] 马宗斌[1] 房卫平[2] 谢德意[2] 张东林[3] 台国琴[1] 

机构地区：[1]河南农业大学农学院,郑州450002 [2]河南省农业科学院棉花油料作物研究所,郑州450002 [3]河南省开封县棉花办公室,开封475100

出　　处：《棉花学报》2007年第1期8-12,共5页Cotton Science

基　　金：河南省重大科技攻关(0322010800);河南省科技攻关项目研究的部分内容(0424020023)

摘　　要：在大田条件下,以3.75万株.hm-2常规栽培去叶枝棉为对照,研究了2.25万株.hm-2简化栽培留叶枝棉的光合特性、生态特性及产量品质,结果表明:简化栽培的棉行间通风透光条件较差,霜前花率低,叶片非光化学猝灭系数NPQ和中下部叶片光合速率明显低,纤维比强度降低5.2%。但两种处理间的主茎叶绿素含量、PSⅡ潜在光化学活性Fv/Fo、实际光化学效率ФPSⅡ、气孔导度Cs、光化学猝灭系数qP和纤维长度、麦克隆值、整齐度、成熟度及产量没有明显差别。As compared with cotton-removing-leafy-shoot of conventional cultivation with 3.75×10^4 plants per hectare, the photosynthetic characteristics, the yield ＆ quality of cotton-retaining-leafyshoot of simplify cultivation with 2.25×10^4 plants per hectare was studied under field condition. The results showed that simplify-cultivation＇s ventilation and transmitting light rate between the row were inferior, the yield percent before frost was lower, the photosynthetic efficiency of leaves in middle-below layer of canopy and non-photochemical quenching coefficient （NPQ）of main stem leaves reduced obviously ; fibre strength was reduced by 5.2%. But the contents of chlorophyll, PSⅡ activity（Fv/ Fo）, actual photochemical efficiency of PS Ⅱ（ФpsⅡ）, stomata conductance （Gs）, photochemical quenching coefficient （qP）of main stem leaves, and cotton yield, and length, micronaire value, uniformity, maturity of cotton fibres were no obviously difference between the two treatments.

关 键 词：棉花 稀植 留叶枝 光合特性 产量 品质 

分 类 号：S562[农业科学—作物学]