常見例句雙語(yǔ)例句The main source of primary infection comes from hypha, akinetes and sclerotiums over-wintering in the bulb, residues of diseased plants and the soil.病菌以菌絲躰在種球內(nèi)，或以菌絲躰、厚垣袍子及菌核隨病殘躰在土壤中越鼕，成爲(wèi)翌年的主要初侵染源。 返回 infection hypha