探讨了小麦秸秆还田优化施氮、传统施氮等处理对夏玉米的株高、节根、叶面积、茎粗以及叶绿素含量等的影响；
We discussed the effects of different managements on height of summer maize, number of nodal root, leaf area, plant stem width and chlorophyll content etc.
荆芥株高、茎径变化动态，根、茎、叶、穗干重积累动态均呈不同特征的“S”形曲线。
The dry weights of root, stem, leaf and spike coubld be described as S curves either.
用原子吸收分光光度法分别测定了喷施氨基酸铜和喷施清水后，接种棉花黄萎病菌的感病棉株的根、茎、叶中铜元素的含量。
Copper in the root, stem and leaf of cotton which was infected by Verticillium wilt was sprayed with cupric complexes of glycine and water.
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