黑麦草是牛、羊的优良牧草,其优点是生长快,分蘖多,繁殖力强,茎叶柔嫩光滑,品质好,各种家畜均喜食。但也有其不足,宜在夏季凉爽,冬季不过寒的地方栽培。在10—27℃为其生长适宜温度,35℃以上生长不良。因此,天热以后再生力极差或中途死亡,在我国南方种植大多不能过夏。 Ryegrass is an excellent pasture for cattle and sheep, which has the advantages of fast growth, more tillers, strong fertility, tender and smooth stems and leaves, good quality and good eating habits. But there are also some shortcomings, it is advisable to cultivate in cool summer and cold winter. At 10-27 ℃ for its growth suitable temperature, poor growth above 35 ℃. Therefore, after days of heat regeneration is very poor or die halfway, most of the cultivation in southern China can not be over the summer.