Abstract:

To match site with trees in orcharding, it could offer the theoretical reference in order to gain high yield, stable yield and top quality in production. Based on the output materials in the continuous 20 years (1961-1982) and the weather materials in the relate years from the major Huaizhi litchi fields of Conghua and 6 other counties in Guangdong Province, the feasibility of the application of the relational grade analysis of Grey System Theory to the weather ecology suitableness of 7 Huaizhi litchi fields, including Conghua County was evaluated. The results showed that the order of the weather ecology conditions were similar to ‘ideal state’ was: Conghua＞Huidong＞Huaxian＞Luoding＞Shenzhen＞Doumen＞Huilai, Conghua (r1=0.9418) was most closed to the ‘ideal state’ and the most suitable growing area, the grey relational grade analysis could estimate the weather ecology suitableness of each Huaizhi litchi field quantitatively, and the conclusion was corresponding with the fact of each field. It provided a kind of analysis method which was easy-calculating, direct-seeing and exact and reliable for objectively evaluating the weather ecology suitableness of Litchi field and growing the right plants in the right places.