摘要
本文研究了在时域和区域上具有两种过渡特性的淮北地区,春季水分盈亏变化对小麦产量的影响,水分盈亏变化的环流特征,并进行了水分盈亏的长期预报试验。结果表明,水分盈亏量是一种从水分收入和支出的两个主要方面真实反映水分条件好坏,具有实际生产意义的水分指标。用水分盈亏量作为一种新的旱涝长期预报对象,比用降水量局地性小,更具有生物学意义和气候学意义的代表性。
In this paper, the influence of the change in general circulation on the difference between precipitation and evaporation, which has an effect on wheat production, are investigateb on Huaibei area over where two transitional features on space and time in spring are existed.Besides, an experiment of long-range forecast has been made for the difference between precipitation and evaporation.
The results show that the difference between precipitation and evaporation is a fine water indicator expressed water balance with practical significance. The experimental forcasting results show that the difference between precia pitation anb evaporation which may become a new predictant to wetness/dryness long-range forcast. has more important significance of the climatology and biology than the precipitation.
出处
《气象科学》
CSCD
北大核心
1992年第1期24-31,共8页
Journal of the Meteorological Sciences
