沈阳农业大学学报2000，Vol.31Issue(4)：318-323,6.
东北三省玉米生育热量指标与品种熟型分布研究
Heat Index of Maize Growth and Development, and Distribufion of Variety Types
摘要
Abstract
Using the data of mean decade temperature of the flint ten days of Apr. to the last ten days of Oct., daily minimum tem peratme of Sep to Oct. from 1971 to 1995,and the data of maize planting date, the heat index of maize in various growth stages is calculated. The lowest biological temperature of seed germination is about 8℃. The effective accumulated temperature of ≥ 8℃ from germination to emergence is about 100℃ · d. The effective accumulated temperature of ≥ 10℃ fiom emergence to heading is related to the leaves of maize. The index from heading to maturity is expressed by active accumulated temperature of ≥ 10℃ from the cor rected standard heading day to maturity. Maturity data is the day when maturity degree equals to 1.The north planting boundary of different varieties was determined according to the criterion of maturity in 80% of years.关键词
玉米/生育/热量指标/成熟度Key words
maize/development/heat index/maturity degree分类
农业科技引用本文复制引用
罗新兰,安娟,刘新安,曲成军,任传友,张丹..东北三省玉米生育热量指标与品种熟型分布研究[J].沈阳农业大学学报,2000,31(4):318-323,6.基金项目
国家"九五"农业科技攻关项目96-020-01-06资助 （）
