preferential species是什么意思

用法例句

Heavy Metal Concentration and Plantability Assessment of Edible Vegetables in Lechang Lead-Zinc Mine Area;

乐昌铅锌矿区蔬菜重金属含量与适种性评价

The superior species of poplar in China and abroad and their research history and our achievements in breeding are introduced in thepaper.

介绍了国内外杨树造纸材适生良种及其研究历史和我国在杨树育种方面成就;探讨了造纸用杨树新品种存在的问题;论述了杨木造纸良种的科学标准及其相互制约与优势补缺;提出了我国杨木造纸良种的分区规划方案;展望了杨树造纸适用良种的发展前景。