渭北旱塬杨家陇实验分区牧草引种栽培试验研究

INTRODUCTION AND CULTIVATION OF FORAGE GRASSES AT YANGJALONG EXPERIMENTAL STATION IN WEIBEI RAINFED HIGHLAND

本文根据连续3年的田间试验结果,对引种栽培的20种牧草,从物候期、覆盖度、茎叶比、青干比、生长速度、鲜草产量及抗逆性等七个方面进行对比分析,筛选出了适合渭北旱塬东部地区生态条件的优质高产草种,它们是豆科牧草中的红豆草、沙打旺和草原二号苜蓿等,以及禾本科牧草中的多花黑麦草、苇状羊茅和无芒雀麦等。从而为当地人工种草,强化农牧结合奠定了基础。

The experimental plots were situated on northern Weibei Rainfed Highland, in Chengcheng County, Shanxi Province where the elevation is 810m above sea level. Based on the three years' experiment, The phenophase/coverage/stem—leaf rate/greenfed—hay rate/growth rate/output in yield and resistance to adversity of 20 varieties of forage grass which were introduce in 1987 were analysed in this paper. 12 varieties of forage grasses, including Onobrychis viciaefalia, Astragalus adsurgens, Medicago media (Caoyuan No. 2muxu), Lolium multiflorum, Festuca amndinaca, Bromus mermis, etc. Were selected as best varieties for the local conditions. The experiment results provided us with the scientific basis, by which we could settle the forage—shorted contradiction which discards domestic animal needing during the time of winter and spring and establish artificial pasture or semi—artificial pasture in a vast area of Weibei Rainfed Highland.