Describe the difference of primary structure between root and stem.
简述根与茎初生结构的区别？
Describe the difference of secondary structure between root and stem.
简述根与茎次生结构的区别？
There are plenty of Steroid saponin in the root and stem of Anemarrhena asphodeloides Bge.
知母根茎中含大量甾体皂苷，现代药理研究表明知母皂苷及皂苷元为其主要活性成分。
Most portion of hypocotyl has the characteristic of the primary structures of its root and stem.
下胚轴大部分区段同时具有根、茎初生结构的特征。
The utility model relates to a blackland and clay root and stem crop ditch loosening machine for loosening soil.
本实用新型涉及一种疏松土壤的黑粘土地根茎作物沟土疏松机。
The alkaloid contents were highest in root and stem base phloem of Amur corktree saplings, and lower in leaves, xylem and periderm.
黄檗幼树根韧皮部和茎干基部的韧皮部中主要药用成分含量很高，而叶片、木质部和周皮很低。
Current study of citrus acridone is focusing on the tissue of root and stem, and there is no report on the study of fruit acridone up to now.
对柑橘吖啶酮的已有研究多以根茎为实验材料，关于果实中吖啶酮的研究尚无报道。
It is important element of production management to control soil water content reasonably and harmonize growth between root and stem at this stage.
合理地控制土壤水分含量，协调地上部分和地下部分的生长是此期生产管理的重要环节。
It is important element of production management to control soil water content reasonably and harmonize growth between root and stem at this stage.
合理地控制土壤水分含量，协调地上部分和地下部分的生长是此期生产管理的重要环节。
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