常見(jiàn)例句Technology of Grafting Ulmus pumila var, pendula Rehd. 垂榆嫁接技術(shù)。Experiment on Grafting and Planting of Ulmus pumila var. Pendula Rehd. 垂榆嫁接及栽植的試驗(yàn)研究。A Preliminary Study on the Mathematic Model of Leaf Area of Ulmus pumila Linn. 與相似的文獻(xiàn)。A Study on the Distant Hybridization between Populus alba Linn. And Ulmus pumila Linn. 銀白楊與白榆遠(yuǎn)緣雜交的研究。When Urochela quadrinotata Reuter harms Ulmus pumila,the spread of disease will take a turn for the worse. 紅足壯異蝽的危害能加重病害的流行和擴(kuò)展。Otherwise, the phenology phases of ulmus pumila are not significantly related to precipitation and sunshine duration. 研究表明，榆樹(shù)物候與降水、日照關(guān)系不顯著。 返回 Ulmus pumila