From the appearance of the two leeks is relatively obvious, broad-leaved leek color looks more tender, a little light green tender green, white look, while the narrow-leaved leeks look dark green, smelled broad-leaved leeks have a faint fragrance, while the narrow-leaved leeks smell on the smell of the more intense, but eat it is not choking, just leeks aroma is more intense.

Chives, (scientific name: Allium tuberosum Rottler ex Sprengle.) Alias: Fengben, grass bellows, rising sun grass, lazy man's vegetable, long life leek, aphrodisiac grass, flat vegetable, etc.; belongs to the lily family perennial herb, with a special strong smell, rhizome transverse, bulbs narrowly conical, clustered; scaly tunica yellowish-brown, reticulated fibrous; leaf basal , barred, flattened; umbels, terminal.

Leaves, scapes and flowers are used as vegetables for consumption; seeds, etc. can be used as medicine, with the effect of tonifying the kidney, stomach, refreshing the spirit, stopping sweating and fixing astringency. In traditional Chinese medicine, some people call leeks as "wash the intestines grass". Chives are highly adaptable, cold-resistant and heat-resistant, and are cultivated all over the country.

The fibrous root system of the chordate root, there is no main lateral root. Mainly distributed in the 30cm tillage layer, the number of roots, there are about 40, divided into absorption roots, half storage roots and storage roots of three kinds. Born in the base of the shortened stem, the shortened stem is a disk-like metamorphosis of the stem, the lower part of the roots, the upper part of the leaves.