苜蓿与禾草不同混播模式研究.

The forage hay yield, land equivalent ratio, inter-specific competitiveness and relative biomass of alfalfa and annual or perennial grass under different forage combinations, seeding ratio and planting methods were studied. The results showed that the seeding amount of herbage in the year of planting affected the yield of different kinds of herbage. In the mixed sowing mode of alfalfa and oat, the combination of 40% alfalfa + 60% oat performed better, the hay weight was 247 g / m 2, the land equivalent ratio LER was 1. 1, and the land comprehensive benefit was higher. The combination of 25% alfalfa + 75% grass was better than that of other mixed sowing in the same line, the hay weight was 951 g / m 2 or 758 g / m 2, the land equivalent ratio LER was 1. 2 or 1. 3, and the land comprehensive benefit was higher. The performance of the combination with alfalfa and grass with the row ratio of 9 ∶ 3 was better among different mixed sowing combinations in different rows, and the hay weight was 964 g / m ² or 877 g / m ², respectively. And the growth competition among different kinds of grasses was weaker, which was conducive to the persistence of artificial grassland. [ABSTRACT FROM AUTHOR]