The Qinling-Daba Mountains of Shanxi is located in the north margin of subtropical zone,where there are complex ecological conditions which,differ greatly with places,and so to somewhat limit the distribution of the cultivated tea plants.Taking the grain-planting area in Hanjang River as a center,to the south, the low mountains and hills zone along the north slope of Daba Mountains is a relative suitable region for tea plantation :and to the north, that along the south slope of Qinling Mountains is a subsui...