Sunflower has high and low temperature tolerance, low requirements for soil, strong saline-alkali tolerance and salt absorption. It is 65,438+0-3.5 meters high, with erect stems, rounded and angular edges, hard white bristles, wide oval leaves, usually alternate, rough on both sides, hairy, long handle, head-shaped, solitary at the top of stems or branches, multi-layered, leafy and imbricate total bracts, long bristles, flowering in summer, and lignified, gray or black pericarp.
Rape flower, also known as Brassica, originated in Europe and Central Asia, and belongs to the genus Panicum in Cruciferae. In China, rape flowers are mainly distributed in Wuyuan, Hanzhong Basin, Jiangling, Luoping Plain in Yunnan and Menyuan Plateau in Qinghai. Their flowers are bisexual, with four petals arranged in a cross, and the stamens are usually six, four long and two short. The pistil consists of two carpels, and the ovary is located on the upper side. The stem is cylindrical, multi-branched, with alternate leaves, large dark green leaves, no petiole and stipules; In March and April, the stem tip is covered with flowers, with racemes, four sepals, yellow-green, and four corollas, yellow, in a cross shape. The fruit is silique, which is purple-black and yellow when it is ripe in summer.