用perennial grass造句子，“perennial grass”造句

An Old World perennial grass, widespread as a weed in warm regions and used for thatching .

Planting perennial grasses on existing agricultural lands had the most beneficial effect on soil carbon, the researchers found.

In alpine region, it is feasible and effective to improve the productivity by establishing mixed artificial perennial grassland.

Unlike corn, which must be replanted every year, perennial grasses such as switchgrass and Miscanthus preserve and increase carbon stores in the soil.

Zoysia Willd. is a kind of warm-season perennial grass of Poaceae family. It is low, creeping and sward-forming.