Temporal and spatial variations of soil NO3--N in Orychophragmus violaceus/spring maize rotation system in North China.
XIONG Jing1,2, WANG Gai-lan2, CAO Wei-dong1,3, BAI Jin-shun1, ZENG Nao-hua1, YANG Lu4, GAO Song-juan4, SHIMIZU Katsuyoshi5
Chinese Journal of Applied Ecology
.
2014, (2): 467
-473
.
