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茶树原产于我国西南部,长期在温暖湿润的生态条件下,逐渐形成了喜温喜湿的特性。我省茶区分布较广,气候温和,水利资源丰富,年降水量多数可达到1000～1500毫米,适宜茶树生长,是我国的主要产茶省。但我省茶区的降水量在季节分布上与茶树的生长需水量并不完全相适应。例如:在春、夏茶期间(4～6月份),一般雨水较多,茶园土壤水分充足,茶叶产量、品质较稳定;秋茶期间(7～9月份),晴热少雨,蒸发量大,茶园常有旱情,
Tea tree native to China’s southwestern region, long-term in the warm and humid ecological conditions, gradually formed a hi-temperature-wet characteristics. Tea area in our province is widely distributed, mild climate, abundant water resources, annual precipitation can reach 1000 ~ 1500 mm, suitable for the growth of tea, is China’s major tea producing province. However, the precipitation in the tea area of our province is not entirely compatible with the growth of tea tree in the seasonal distribution. For example: during the spring and summer tea season (April to June), there is generally more rainwater, adequate soil moisture in the tea plantation, and more stable tea yield and quality. During the autumn tea season (July and September) Tea plantations often drought,