枣棉间作不同模式对棉花光合特性影响的研究  

Southern Jujube Cotton Intercropping Different Mode Cotton Photosynthetic Characteristics of the Research

作　　者：彭桃桃[1] 赵金祥[1] 孙勇[1] 万素梅[1] 胡守林[1] 

机构地区：[1]塔里木大学植物科学学院,新疆阿拉尔843300

出　　处：《塔里木大学学报》2013年第2期9-13,共5页Journal of Tarim University

基　　金：国家自然科学基金(31060181;31260309);国际合作项目(2011/0616/cotton 002.);大学生创新项目(TDGCX201216)

摘　　要：选用枣棉间作立体种植方式下的棉花为研究对象,在灌水模式相同的情况下以棉花品种—新陆中36号为试验材料,研究了3种复合系统下棉花的光合特性,进而筛选出适合大田种植的枣棉间作方式。研究表明:高密度种植模式下的棉花净光合速率、胞间CO2浓度、蒸腾速率、气孔导度优于低密度种植模式下的棉花(即:m3>m2>m1),棉花净光合速率在不同处理条件下均呈先上升后下降再上升的趋势;而棉花叶片的蒸腾速率则呈现逐渐下降趋势等;此外3种复合系统下棉花产量也有较大的差异,其中m3的籽棉产量最高,光和物质累积较多,说明随着种植密度的增加,棉花产量出现递增的变化特点。即通过实行适合的高密度间作栽培种植方式可有效改善系统内棉花光环境条件,降低系统内光的竞争。In order to screen out the intereropping cotton planting mode in soutbem Xinjiang, the photosynthetic characteristics of cot- ton under three intercropping planting mode with jujube were determined. The study showed that the net photosynthetic rate （NPR）, intercellular CO2 concentration （ICC）, transpiration rate （TR） , stomata] conductance （SC） of the high density planting mode of cot- ton is higher than that of the low density planting mode of cotton （ m3 〉 m2 〉 ml ） , the Curve of NPR presented a tending of rising, falling and rising. And the TR presented a trend of gradual declining. The yields of cotton were different at three planting modes with the highest fiber yield and dry matter accumulation at the m3 mode, and the yield increased with the increasing of the density of cotton. That is, through a suitable high density interplanting cultivation mode the cotton light environment condition could be effectively im- proved, the light competition in the compound system could be decreased.

关 键 词：枣棉间作 光合特性 棉花 产量 

分 类 号：S31[农业科学—作物栽培与耕作技术]