overground part meaning in Chinese

地上部分

So it is considered that root which act as a sort of barrier retards the upwards transform of heavy metal such as lead , arsenic and cadmium , and protects the overground parts of the crop from toxin
因此认为根作为一种屏障使重金属铅、砷和镉难于向上部分迁移，使地上部分免受其害。
The leaves of c . smyrnioides had been yellow in the end of april and the overground part of the plant had been blasted in the first of may . but at the same time , it just turned yellow for saturation treatment . and a . sylvestris and c . violaceum have similar tendency , that is , the plant in drought treatment blasted earlier than in saturation treatment
受到干旱胁迫的明党参植株在4月中旬叶片就已开始发黄， 5月中旬地上部分已枯萎，而此时饱和水分条件下植株的叶片刚开始变黄，川明参和峨参均与明党参相似，干旱条件下植株的枯萎时间均早于饱和条件下。