Effects Of The Quality Of Four Citrus Varieties On The Different Climatic Zones In Guangxi

This study aimed at the observations of the phonological period, temperature and Rainfall as well as the dynamic analysis of fruit sugar and acid metabolism of4citrus Varieties on three climate zones of Guibei, Guizhong and Guinan。And based on the Various climatic zones meteorological data, which the factors were analyzed and compared the effects of the metabolism of citrus fruit sugar and acid, the purpose was To find differences to provide scientific theoretical basis for the divisions the most suitable climatc zones of citrus varieties and harvest regulation, the results showed that:1.Results showed that4citrus cultivars behave differently in the phenology of the different test points,4Citrus Cultivars in different testing points phenology generally are from north to south, showing early state. In southern Guangxi and the laurel and Northern Guangxi, Wenzhou tangerine maturity than Gui Gui in Miyamoto and north respectively, early67and84d respectively; mandarin orange early35and51D;11and26D respectively in advance of Nanfeng orange, Newhall Navel Orange respectively to41and54d. The use of the same species in cultivation of different climatic regions, can realize the variety regulation.2. Temperature data and annual rainfall data show that from the north to the south, the annual average temperature three test points respectively, extreme temperature and extreme minimum temperature, various climatic zones are different. In terms of rainfall, the climate zone from the north to the South was decreased, and the annual rainfall days, is in the north and south sides of the trend. The difference between Nian Junwen, rainfall and annual rainfall days, has great impact on the number of the same species accumulated temperature required in different climate regions. In southern Guangxi climate impact on Miyamoto of Wenzhou Mandarin cultivars accumulated temperature is the most obvious, the required minimum number of accumulated temperature, the first mature. From the south to the desired temperature in migration, a substantial increase in the number of southern Guangxi, compared with GUI, the accumulated number increased25.11%in guangxi. And Northern Guangxi area of Guangxi required number of accumulated temperature difference in southern Guangxi; influence of climate on mandarin orange varieties of accumulated temperature is the most obvious, the required minimum number of accumulated temperature, the first mature. In the north of Guangxi, Guangxi relative Guinan is required number of accumulated temperature increase. Guizhong and in North Guangxi required compared accumulated number were increased by22.89%,10.93%; in southern Guangxi climate impact on Nanfeng orange varieties of accumulated temperature is the most obvious, the required minimum number of accumulated temperature, the first mature. In the north of Guangxi, Guangxi relative Guinan is required number of accumulated temperature increase. Guizhong and in North Guangxi required compared accumulated number were increased by22.21%,15.06%; in southern Guangxi climate impact on Newhall navel orange varieties of accumulated temperature is the most obvious, the required minimum number of accumulated temperature, the first mature. In the north of Guangxi, Guangxi relative Guinan is required number of accumulated temperature increase. Guizhong and in North Guangxi required compared accumulated number were increased by20.87%,12.28%.3.In the fruit sugar, acid metabolism dynamic aspect, the Citrus Cultivars in different climate zones of total sugar, reducing sugar from the fruit enlargement stage to ripe stage, the difference increasing with fruit development; citric acid content increased first and then decreased; the ratio of sugar and acid late increase. As in Longzhou test points7months late will reach the peak of reducing sugar content of Miyamoto Wenzhou Mandarin, and in the Shipingping, Xiabshui test points respectively to10in late August, mid peak.4.Different regional climate effects on the same variety quality have different performance. Miyamoto Wenzhou Mandarin in the south of Guangxi Guangxi, Guangxi than North showed early maturity, but the fruit contains citric acid is relatively high. But the orange Shatang, Nanfeng orange, Newhall Navel Orange3varieties in Guangxi (Shibeiping farm test point) layout that have comparative advantages.