华北农学报2012，Vol.27Issue(z1)：176-181,6.
充足灌水条件下不同年代玉米品种干物质积累与分配规律的研究
Accumulation and Distribution of Dry Matter under the Conditions of Saturated Irrigation in Maize Varieties Released in Different Eras
摘要
Abstract
Experiment was conducted in glasshouse in Agricultural University of Hebei during 2010 -2011. The characters of dry matter accumulation and distribution of varieties from different eras were studied under saturated irrigation conditions, with 6 maize cultivars released from 1950s Baihe.Jidan 101,Zongdan 2, Yedan 13, Zhengdan 958 and Xianyu 335. The result showed that;Modern varieties had higher dry matter accumulation due to their late leaf senescence. With the replacement of varieties, translocation of photosynthate was increased and dry weight and allocation proportion of ear in maturing stage was also gradually increased. Root weight increased from 1950s to 1980s but decreased for modern maize varieties. Relative small root decreased the root redundancy and lowered the photosynthate consumption on roots. Compared with the early varieties the modern maize possess high LAI and lower redundancy waste so the high harvest index was reached, The study is of great importance in making clear the mechanism of the high yielding for modern maize and realizing good quality, high yield and high efficiency of maize production.关键词
玉米/干物质积累与分配/不同年代品种/根冠比Key words
Maize Accumulation and distribution of dry matters/ Varieties of different eras/ Root-shoot ratio分类
农业科技引用本文复制引用
修文雯,陈传晓,田晓东,刘鑫,张怡明,李少昆,张凤路..充足灌水条件下不同年代玉米品种干物质积累与分配规律的研究[J].华北农学报,2012,27(z1):176-181,6.基金项目
国家重大基础研究项目(2009CB118601) （2009CB118601）
"十二五"国家粮食丰产科技工程河北省项目(2011BAD16B08) （2011BAD16B08）
国家自然科学基金项目(31071362) （31071362）
河北省自然科学基金项目(C2008000257) （C2008000257）
