在CNKI中能查找到袁隆平院士发表的有关杂交水稻的学术期刊，最早是哪一年？（）

A.lumbago
B.Low back pain
C.Posterior lumbago
D.Posterior back pain

A.Asthma，Exercise-Induced
B.Status Asthmaticus
C.Asthma，Occupational
D.Asthma，Bronchial

A.diabetes insipidus
B.diabetes
C.diabetes mellitus，Type 1
D.diabetes mellitus