Studies on the Nitrogen State of Leaf, Culm and Sheath at Different Layers in Canopy and Their Relationship with Grain Quality in Winter Wheat是什么意思_Studies on the Nitrogen State of Leaf, Culm and Sheath at Different Layers in Canopy and Their Relationship with Grain Quality in Winter Wheat在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句