供应铵态和硝态氮对苹果幼树生长及15N利用特性的影响
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Effects of Ammonium and Nitrate Nitrogen on Growth and Properties of 15N Distribution of Apple Trees
LI Jing, JIANG Yuan-Mao, MEN Yong-Ge, LI Hong-Na, ZHOU Le, WEI Shao-Chong
中国农业科学 . 2013, (18): 3818 -3825 .  DOI: 10.3864/j.issn.0578-1752.2013.18.010