Redroot pigweed ( amaranthus retroflexus l . ) is an annual species of weeds which is widely distributed and important in cultivated field and other land all over the world 摘要反枝苋是世界性分布的一种恶性杂草, ?解其生物学特性将有助于对其进行有效防治。
Amaranthus retroflexus is a species of flowering plant in the Amaranthaceae family with several common names, including red-root amaranth, redroot pigweed, red-rooted pigweed, common amaranth, and common tumbleweed. page 470