中国口岸首次截获外来有害杂草——胀果苋

Amaranthus deflexus L.——an alien weed first intercepted in Chinese domestic ports

胀果苋(Amaranthus deflexus L.)为一年生或短期多年生植物,广泛分布于热带、亚热带与暖温带地区,但在中国尚未分布。由于胀果苋为恶性杂草,对农田、果园、路旁、园林绿化等危害严重。福建出入境检验检疫局首次截获胀果苋,系我国口岸首次截获该种外来杂草。本文根据截获的胀果苋种子及栽种植株,详细对其形态特征进行了描述;并根据资料,介绍了胀果苋的分类地位、地理分布、生物学与危害性,为口岸胀果苋的鉴定识别提供参考。

Amaranthus deflexus L.,which is an annual or short perennial plant, is native to south America, and it was locally introduced or naturalized in tropical to warm-temperature regions of globe. It is not distributed in China yet. A. deflexus is a malignant weeds that could seriously damage agricultural fields, orchards, roadside fields and landscape fi elds. A. deflexus was fi rst intercepted by Fujian Entry-Exit Inspection and Quarantine Bureau in China. Morphological characteristics of seeds and plant of A. deflexus was described in detail based the these intercepted weeds and their plant. The classification, geographical, biology and biohazard of A. deflexus was also described according to reference information in this paper, which might provide information to prevent the its invasion.