应用生态学报2011，Vol.22Issue(9)：2337-2342,6.
我国东北地区不同生态条件下玉米品种积温需求及利用特征
Characteristics of accumulated temperature demand and its utilization of maize under different ecological conditions in Northeast China
摘要
Abstract
To understand the accumulated temperature (ACT) demand of maize for its normal mat-uration among years and regions as well as the use efficiency of local ACT, a group of work-net field experiments was conducted at 55 sites in 28 regions of Northeast China spring maize planting area (40°07'- 48°08' N) in 2007-2009, taking an eurychoric maize variety Zhengdan 958 as test ob-ject. The meteorological conditions in the area had large difference. In the same regions, the active accumulated temperature above 10℃ in whole corn growth season (ACT10 for short) demand of Zhengdan 958 for completing its whole growth and development process had little difference among different years (P>0. 1). However, in different regions, this demand differed significantly (P< 0. 001) in the same years, with the largest difference occurred from seedling stage to emergence stage, followed by at post-silking stage, and the least at pre-silking stage. The maturity degree of Zhengdan 958 had significant correlations with local heat conditions, and there was a linear relation-ship between use efficiency and latitude. Zhengdan 958 could be safely matured in the regions with the ACT10 being more than 3000℃, and had a risk of immaturity in the regions with the ACT10 less than 3000℃. In conclusion, under certain meteorological conditions, the ACT demand of Zhengdan 958 for completing its growth process was relatively stable, and, due to the self physiological adjus-ting , the ACT10 demand of Zhengdan 958 at its different growth stages showed a significant difference among different regions.关键词
玉米/活动积温/气象生态Key words
accumulated temperature/ meteorological ecology.分类
农业科技引用本文复制引用
白彩云,李少昆,柏军华,张厚宝,谢瑞芝..我国东北地区不同生态条件下玉米品种积温需求及利用特征[J].应用生态学报,2011,22(9):2337-2342,6.基金项目
国家基础研究发展计划重点项目(2009CB1186)和国家玉米产业技术体系项目资助. （2009CB1186）
