1, Poa pratensis, Poa pratensis is an annual or winter herb. As a lawn cultivation, this variety has fast growth speed and strong competitiveness. Once turned into a lawn, weeds are difficult to invade. Moreover, it has strong reproducibility, pruning resistance, trampling resistance, beautiful grass posture, good uniformity, density and smoothness, and is suitable for building various lawns. Born in plain, hilly roadside grassland, field ditch or shady wasteland wetland, altitude 100-4800 meters.

2. Festuca arundinacea is a perennial ground cover plant of Gramineae, mainly distributed in the northern region. It likes cold, humid and warm climate, grows well in fertile, humid and organic-rich fine loam with pH value of 4.6-8.5, and is widely used as playground lawn and protective lawn, and can also be used as pasture for raising livestock.

3. Perennial ryegrass, perennial ryegrass and gramineous ryegrass. It is an excellent forage grass, widely introduced and cultivated all over the world. Born in meadow grassland, roadside wetlands are common. Ryegrass grows luxuriantly in spring and autumn, with tender and juicy grass and good palatability.

4. Plum blossom, belonging to Gramineae, is a perennial herb with thin roots. Distributed in eastern Sichuan, Yunnan, Guizhou, Central China, East China and other provinces. Born in grasslands, hillside forests, roadsides, fields and streams at an altitude of 300- 1700 meters.