Under Ground Portion是什么意思

用法例句

Through field experiment conducted in Hexi corridor of Gansu Province,this paper discussed the(effects) of root separation on plant nitrogen uptakes and soil nitrate nitrogen accumulation in wheat/maize(intercropping).

通过在甘肃河西灌区的田间试验,该文探讨了地下部分隔作用对小麦/玉米间作氮素吸收和土壤硝态氮含量的影响。