采用土柱模拟栽培法与大田试验相结合的方法，对松嫩平原不同株型玉米的根系分布特征进行了比较。
In a soil column culture and a field experiment, the comparison of root distribution of spreading-leaf and upright-leaf maize cultivars in Songnen Plain was studied.
的起源、栽培历史和分布区的自然生态条件、生长特性、栽培模式与品质特点。
Origin, cultivation history, natural conditions of distribution areas, growth characteristics, cultivation mode and nut quality of Juglans sigillata were expatiated.
方法分析加兰他敏野生资源分布与人工栽培，及其外消旋体与对映体的化学合成进展状况。
METHODS: Comprehensivelly analyzing the status of the wildlife and the planting herb resource of galantamine, and the progress of synthesizing racemized galantamine and it's enantiomer.
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