扁穗牛鞭草草地高效饲草生产系统研究

The Complementary Forages System in Hemarthia compressa Pasture

摘要:

秋季在‘广益’扁穗牛鞭草(Hemarthia compressa ‘Guangyi’)草地上分别补播‘中饲828’小黑麦、‘冬牧70’黑麦、‘长江2号’多花黑麦草等冷季型牧草，对补播系统牧草产量、质量进行比较研究。结果表明：补播‘中饲828’小黑麦、‘长江2号’多花黑麦草均能显著增加‘广益’扁穗牛鞭草草地牧草产量和质量，其中补播‘长江2号’多花黑麦草的处理干物质和粗蛋白(CP)产量比不补播分别提高12.3%、15.6%；补播‘中饲828’小黑麦的处理分别提高11.3%、10.4%；但补播‘冬牧70’黑麦的处理增效作用不明显。 ‘长江2号’多花黑麦草的补播效果最好，是较优的冬季补播草种。

Abstract:

In order to selecte the suitable grass species in winter, the yield and quality of the forage of Hemarthia compressa ‘Guangyi’ pasture resown with Secale cereale ‘Dongmu70’, Triticale ‘Zhongsi 828’, and Lolium multiflorum ‘Changjiang No.2’, respectively, were evaluated in autumn. The results shown that forage yield and quality of ‘Guangyi’ increased significantly by resown with ‘Zhongsi 828’ and ‘Changjiang No.2’, in which the yield of dry matter increased by 11.3% and 12.3%, crude proteins by 10.4% and 15.6%, respectively. No significant difference was found resown with ‘Dongmu70’. It suggested that ‘Changjiang No.2’ was the optimal overseeding grass for H. compress in winter.