目的：对窄叶大黄非蒽醌类化学成分进行研究。

Objective:Study on the non-anthraquinone cons ti tuents from rhizoma and radix of Rheum sublanceolatum.

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在众多品种中，最重要的是窄叶种、薄层种和阔叶种。

Among several varieties, there are three that are the most important: "angustifolia", "longifolia" and "latifolia".

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窄叶青8号垩白米与非垩白米的上述各指标间无显著差异。

The difference in the above indices between chalky and non-chalky milled rice in Zhaiyeqing 8 was not remarkable.

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