The result showed that: the trend of all kinds of nutritive composition was related to varieties and stage of growth and development.
结果表明，牧草中各种营养成分的含量动态与生长发育阶段密切相关。
AIM To observe the effect of lead poisoning of different content on the learning and memory performances of mice on the stage of growth and development.
目的：观察不同量铅中毒对生长发育期小鼠学习记忆能力的影响。
The concentration of and ZR corresponded with stipe growth rate in different development stage.
ZR的浓度决定着菌柄在不同发育时期的生长率。
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