请帮忙看一下这个英语句子有没有语法错误？？？

Question

Photosynthetic diurnal variations of Fraxinus chinenesis under the treatments that slag and sand was set at the bottom of tree pits as the salt-isolated layer in the field were measured.

Answer 1

没有语法错误

Answer 2

没有语病：
意思是：
在树坑的底部区域放置炉渣和沙子作为盐水的隔离层，已测得在该处理下梣属荔枝光合作用的日变化。本回答被提问者采纳

Answer 3

没有错误啊