种植模式对苜蓿固氮和固氮产物转移的影响
姚允寅,陈明,张希忠
EFFECT OF PLANTING PATTERNS ON DINITROGEN FIXATION OF ALFALFA AND TRANSFER OF N FIXED
Yao Yunyin Chen Ming Zhang Xizhong(Institute for Application of Atomic Energy,CAAS,Beijing 100094)
J4 . 1993, (03): 157 -162 .  DOI: 10.11869/hnxb.1993.03.0157