n.(植物)大戟屬
Eradication of leafy spurge in the alfalfa field and nearby area is an important measure inintegrated control of alfalfa rust in north China. 鏟除苜蓿田內(nèi)及附近的大戟屬植物，應(yīng)是我國北方苜蓿銹病綜合防治的重要措施之一。
