root top ratio的意思|示意
地上地下比率
root top ratio相关短语
1、 root-top ratio 用根冠比
2、 top root ratio 冠根比
root top ratio相关例句
The growth of root was promoted, and increased in root top ratio value and activity of root under moderate water stress (water content of soil is 60% the content of field holding water).
适度的水分胁迫（土壤含水量为田间持水量的60％）对苗期小麦根系生长有一定的促进作用，可使根冠比增加，根系活力增大；