Farmland ecology-drought resistant cropping patterns of grain crops and medical plant (Pinellia ternata ) in two ripe and semi-arid region of southern Shanxi
WANG Yuqing, MA Hongfei, SHI Kai, WU Penghui
Ecology and Environment . 2011, (9): 1243 -1246 .  DOI: 10.16258/j.cnki.1674-5906(2011)08-09-1243-04