英语语法分析

Our objective was to explore why Sesamum indicum yield declined severely.

我们的目的是探讨为什么芝麻的产量严重下降。

Our objective was to explore why Sesamum indicum yield declined severely when planted after Rehmannia glutinosa in crop rotation.

我们的目的是探索为什么在熟地黄轮作中种植地黄后，芝麻的收成会急剧下降。

Aims Our objective was to explore why Sesamum indicum yield declined severely when planted after Rehmannia glutinosa in crop rotation.

通过分离地黄（Rehmannia glutinosa）组织中抑制芝麻（Sesamum indicum）生长发育的化感物质，以弄清地黄茬种植芝麻造成芝麻严重减产的原因。