The various unreasonable farming activities in Northern China plain caused tri-dimension pollution to water, soil, biology and air.
概述了华北平原区由于各种不合理的农事活动，对水体-土壤-生物-大气所造成的立体交叉污染的现状。
2
It covers a series of subjects ranging from tea culture, tea art, tea history, botany, biology, agriculture, medicine, geography, hydrology, pottery, tea farming machinery to tea production.