淮河流域麦茬水稻旱作与资源条件谐适性关系研究

THE HARMONY BETWEEN CLIMATE RESOURCES OF AGRICULTURE AND DRY PADDY IN HUAIHE VALLEY

淮河流域是我国重要的粮食生产基地 ,它的发展情况直接关系到全国的粮食安全问题。随着本区农业的发展 ,水资源短缺问题成为阻碍进一步提高农业产量的最大问题 ,本文在分析淮河流域的光、热、水等气候资源条件的基础上 ,重点分析了与水稻旱作的谐适关系 。

Huaihe valley, spreads between warm temperate zone and north subtropical zone, is an important producing field of grain and cotton of China and it pertains to humid monsoon region, where the distinction of seasons is evident. In Huaihe valley the quantities of the light, heating, water resource are harmonious relatively. The yearly distribution of water and heat synchronizes with the growth of crops, thus it is one of the most appropriate place to develop dry paddy with preferable harmony. Dry paddy is a method that adopts a variety of wheat that can forbear dry environment, which is directly sowed on the dry land after wheat harvest without retaining water layer during growth, thus making full use of natural precipitation. The future of the dry paddy in Huaihe valley is discussed in this paper.