unmulched的意思|示意
美 / /
英 / /
unmulched相关例句
Soil water contents and some leaf water physiological parameters in straw mulched and unmulched pear orchards were determined during 1997~1998.
1998年对梨园覆盖秸秆后的土壤含水量和叶片几项水分生理指标进行了测定。