Greenhouse climatic zoning and its commentary in China

In order to differentiate the influences of climatic conditions on greenhouse production, understand the basic requirements of greenhouse production in different areas, the greenhouse climatic zoning in China was made. First of all the Northern and Southern Regions were divided acoording to the climete characteristics of China, then the regions and sub-regions were divided under both of Northern and Southern regions. By adopting the combined methods of integrated and dominant factors, the whole area in China was divided into nine regions(five in the Southern Region, four in the Northern Region) by the methods of cluster analysis and discriminant analysis, 18 sub-regions(nine in the South China and North China respectively) by trend of index isoclines. In different regions, climatic characteristics and current situations of greenhouse were analyzed, climatic advantages, disadvantages and development goal of greenhouse development were also pointed out so as to make full use of climatic resources and avoid greenhouse damage from disadvantageous climate. Heating period, heating consumption of multi-span greenhouse and its adaptation in every sub-region were also given. All these can provide references for the greenhouse development in China.