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祁连山区春季冻土深度特征及对春小麦发育期的影响
张洪芬 王劲松 刘治国
The spring frozen soil depth’s characteristic of Qilian mountainous area and influence relations to spring wheat development period
中国农学通报 . 2009, (22): 0 -0 .  DOI: 10.11924/j.issn.1000-6850.2009-1291