小麦玉米玉米间套作的光合变化  

The Photosynthetic Changes of Wheat/Corn/Corn Cropping Pattern

作　　者：牛斌[1] 冯莎莎[1] 张俊平[1] 

机构地区：[1]河北北方学院农林科技学院,河北张家口075131

出　　处：《安徽农业科学》2009年第35期17429-17430,17498,共3页Journal of Anhui Agricultural Sciences

摘　　要：[目的]研究小麦玉米玉米间套作(麦玉玉间套作)模式下小麦和玉米的叶绿素含量、光合速率变化,为构建较为理想的光合群体结构和运筹肥水措施提供重要依据。[方法]以小麦玉米平作(麦玉平作)为对照,研究北京地区麦玉玉间套作模式下小麦、玉米的光合变化。[结果]麦玉玉间套作模式增产的主要机制是构建了较为理想的光合群体结构,其中小麦叶片叶绿素含量平均为3.764 mg/g,较对照提高了8.88%,光合速率平均为30.62 mg CO2/(dm2.h),较对照提高30.29%;夏玉米叶片叶绿素相对含量平均值为51.1,较对照提高了4.07%,光合速率平均为58.05 mg CO2/(dm2.h),较对照提高14.54%。[结论]麦玉玉间套作模式提高了作物叶片叶绿素含量和光合速率。[ Objective] The aim was to study the chlorophyll content and photosynthetic rate changes of wheat and corn under the model of wheat/corn/corn cropping pattern （WCCCP）so as to prove the important basis for constructing the more ideal photosynthetic colony structure and applying rational fertilization and watering measure. [ Method ] With the wheat-corn sequential cropping pattern（WCSCP） as contrast, the photosynthetic changes of wheat and corn was studied under the model of WCCCP in Beijing area. [ Result]The main mechanism of yield-increasing for the WCCC model was to construct the more ideal photosynthetic colony structure. The more ideal photosynthetic colony structure was constructed by the main mechanism of the model increasing production of WCCCP, in which, the average of chlorophyll content in photosynthetic leaves was 3. 764 mg/g, being 8.88% higher than the contrast and the average of photosynthetic rate was 30.62 mg CO2/（ dm^2·h）, being 30.29% higher than the contrast; the average of relative chlorophyll content in corn photosynthetic leaves was 51.1, being 4.07% higher than the contrast, the average of photosynthetic rate was 58.05 mg COJ（ dm^2·h）, being 14.54% higher than the contrast. [ Conclusion] The chlorophyll content and photosynthetic rate in crop leaves was increased by the model of WCCCP.

关 键 词：小麦玉米玉米间套作 叶绿素含量 光合速率 

分 类 号：S344.2[农业科学—作物栽培与耕作技术]