干旱地区农业研究2017，Vol.35Issue(5)：14-20,7.DOI:10.7606/j.issn.1000-7601.2017.05.03
播期对玉米生长发育和产量的影响
Effect of sowing date on growth and yield of maize
摘要
Abstract
The effect of temperature on maize growth and yield capacity in Liaoning Province were analyzed based on experimental data of different sowing dates in test plots of Zhuanghe and Jinzhou city from 2012 to 2014.With an interval of 10 to 15 days and (stand) planting density of 4.2 plant· m-2,the test was undertaken in 5 different sowing dates,each of which was divided into 4 subsections so as to observe maize growth indices.The results showed that there was a negative correlation relationship between the duration of the maize growth at each development period and the corresponding temperature while the sunlight and soil moisture conditions were appropriate in the two places.The duration period of sowing to seedling emergence was short when the daily minimum temperature was below 15℃,while it gradually increased when the temperature was over 15℃.The duration of tasseling to maturation period prolonged as the sowing date was delayed.There was no significant difference in the period of seedling emergence to tasseling while different sowing dates were in the same temperature condition.More beneficial to maize yield was that the ≥ 10℃ active accumulated temperature was about 1 500 ℃· d and the daily range of temperature was about 8.0 ℃ ～ 8.5 ℃ from tasseling to maturation period.关键词
分期播种/玉米/生长发育/产量Key words
different sowing dates/maize/growth/yield分类
农业科技引用本文复制引用
罗新兰,崔佳龙,蔡福,陈伟,朱明宇..播期对玉米生长发育和产量的影响[J].干旱地区农业研究,2017,35(5):14-20,7.基金项目
辽宁省公益性行业(气象)科研专项“东北地区春玉米农业气象指标体系研究”(GYHY201206018) （气象）
辽宁省农业领域青年科技创新人才培养计划项目“基于作物模型的干旱胁迫对玉米生长和产量影响机制及评估研究”(2015060) （2015060）
辽宁省气象局博士启动项目“基于气候适宜度模型的辽宁玉米生长状况评价及灾害诊断”(D201504) （D201504）
