高寒地区追施有机肥对栽培牧草产量的影响

摘要

通过在青海东部高寒高海拔地区旱作条件下对西北羊茅追施不同量有机肥的试验,研究结果表明牧草鲜草产量随有机肥的增施而逐渐提高,至1500kg.hm-2西北羊茅牧草产草量达最高,之后又随有机肥的增施而逐渐下降,且追施有机肥的各处理在中后期生长速度明显快于对照。%Festuca knyloviana topdressing different amounts of organic fertilizer in high altitude areas of the eastern Qinghai alpine , test results show that the forage fresh yield graduall izer adding to 1500kg · hm-2 forage production grass amounted to the highest, y increased with organic fertilafter gradually decreased with the increase of organic fertilizer applied, and chasing organic fertilizer processing significantly faster than the control in the late growth rate.