冬牧70黑麦+箭舌豌豆混播草地生物量、品质及种间竞争的动态研究

The dynamical studies on biomass, qualities and interspecific competition of the rye and vetch mixture

作者在位于华北农牧交错带的承德地区鱼儿山牧场中国农业大学科技攻关试验站,对冬牧70 黑麦和箭舌豌豆单播及混播的一年生人工草地进行了生物量动态、牧草品质及种间竞争的研究。结果表明,冬牧70 黑麦单播最佳刈割期为抽穗期,混播的最佳刈割期为黑麦乳熟早期,箭舌豌豆下部豆荚充满时期。最佳的混播组合为冬牧70黑麦25% + 箭舌豌豆75%和冬牧70 黑麦50% + 箭舌豌豆50% 。从整个混播群落看,冬牧70 黑麦生长快,植株高,其竞争力强于箭舌豌豆,在竞争中占优势。

The dynamical studies on biomass, qualities and interspecific competition of rye (Secale cereale) and vetch (Vicia sativa) in both monoculture and mixture were conducted on the border of crop and rang regions in north China. The results showed that the optimal harvest time for monoculture wintergrass 70 rye was in heading stage, and the optimal harvest time for rye and vetch mixture was in early milk for rye and in lower pods well filled for vetch. However, the optimal mixture combination were 25% wintergrass +75% vetch and 50% wintergrass+50% vetch. In all treatments, wintergrass rye grew quickly, and the plant was much higher, thus its competition of rye in communities was superior to the vetch.