密植高产条件下玉米植株可溶性糖含量及其产量关系分析  

Effects of Plant Population on the Soluble Sugar and Yield of Spring Maize

作　　者：陈传永[1] 侯玉虹[2] 李刚 朱平[4] 董志强[1] 赵明[1] 

机构地区：[1]中国农业科学院作物科学研究所,北京100081 [2]沈阳农业大学,沈阳110161 [3]吉林省柳河县农业技术推广总站,吉林柳河135300 [4]吉林省农业科学院环境与资源研究中心,长春130033

出　　处：《玉米科学》2008年第4期77-81,共5页Journal of Maize Sciences

基　　金：农业结构调整重大技术研究专项(06-03-02B);国家“十一五”科技支撑计划粮食丰产科技工程项目(2006BAD02A13)

摘　　要：以先玉335为材料,在不同密度条件下,对玉米各器官可溶性糖含量积累变化与产量形成进行了研究。结果表明:不同生育时期春玉米叶、鞘、茎中可溶性糖的平均百分含量均是茎秆>叶鞘>叶片。雌穗各器官中可溶性糖平均百分含量为子粒>苞叶>穗轴。密度主要通过影响穗数来影响产量,在提高密度的基础上,提高穗数、稳定千粒重是提高产量的重要措施。The field experiment with maize hybrid Xianyu335 was carried out at Huadian of Jilin province in 2006. The soluble sugar and yield were researched under different densities. The average contents of soluble sugar of leaves, sheaths and stems were different. The results showed that soluble sugar content decreased in the order of stems 〉 sheaths 〉 leaves on different development period. The average contents of soluble sugar of female ear decreased in the order of kernels 〉 ear bract 〉 ear axis. The grain yield was mainly depended on the ears. And it was a method to improve the yield which improved the 1 000-kernels weight in proper density.

关 键 词：玉米 密度 可溶性糖 产量 

分 类 号：S513.01[农业科学—作物学]