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茶树在生长过程中,会遇到严寒、干旱、病虫害等一些不利因素影响其正常生长,严重时甚至使茶树受害致死。因此,选择茶树良种,不仅要具有优质高产的经济性状,同时,还应对不良环境有较强的抵抗力,否则,优质高产的经济性状就不能得到充分的表现。我国茶区雨量充沛,年降雨量均在1000毫米以上,基本上能满足茶树对水分要求。可是雨量分布不匀,春夏两季的雨量占全年2/3以上,7—8月份气温高,日照强,湿度低,易产生“秋旱”、“伏旱”,限制夏、秋茶的增产,降低成茶的品质,而不同的茶树品种
Tea tree in the growth process, will encounter cold, drought, pests and diseases and some other unfavorable factors affect their normal growth, even in serious cases, the tea tree victims killed. Therefore, the selection of tea tree seed, not only to have high-quality high-yielding economic traits, but also should have a strong resistance to adverse environment, otherwise, high-quality high-yielding economic traits can not be fully demonstrated. Rainfall in tea area in our country is plentiful, with annual rainfall above 1000 mm, basically meeting the moisture requirements of tea trees. However, the rainfall is unevenly distributed, accounting for more than two-thirds of the rainfall in spring and summer, with high temperature in July and August, strong sunshine and low humidity, resulting in “autumn drought” and “drought” Yield, reduce the quality of tea, tea varieties and different