广东省从化市冬种玉米生产的气候适应性分析

The Adaptability of Wintersowing Maize to Climate in Conghua of Guangdong Province

通过对３年冬种玉米分期播种资料的统计分析，探讨了冬种玉米产量及其性状与气候条件之间的定量关系。分析表明，热量不足是影响冬种玉米产量的主要气象因子，低温型灾害的出现对冬种玉米的产量产生不利影响；拔节—抽雄期是低温冷害影响冬玉米产量的关键期，另一个次关键期为抽雄—开花时段。

ased on the statistical data of maize sown at different times in winter in three years, the quantitative relationships of yield of wintersowing maize and its character with climate were analyzed. The results showed that the main meteorological factors affecting the yield of wintersowing miaze are the shortage of accumulated temperature and cold damage. Jointingheading was the most critical stadge in which cold damage affected the yield of wintersowing maize. The secondary critical stage affecting the yield of wintersowing maize was headingblossoming.