英文翻译“湛江绿玉树柴油、汽油含量研究”

绿玉树是解决能源危机非常热门的石油原料植物

So maybe translating in this way will be better:
Zhangjiang Researching Diezel Oil and Gas Content in Euphobia Tirucalli

Zhanjiang Green Yushu diesel, petrol Content

Zhanjiang yushu diesel, gasoline content of green