EN中文
THE INFLUENCES OF PRECIPITATION RESOURCE ON GRAIN CROP YIELD IN DRY AREAS OF WESTERN HENAN PROVINCE AND THE COUNTERMEASURES
Li Kehuang, Zhong Zhaozhan
JOURNAL OF NATURAL RESOURCES . 1997, (1): 23 -28 .  DOI: 10.11849/zrzyxb.1997.01.004