摘要
采用裂区试验设计探讨了施肥量和施肥方式两个因素对以苇状羊茅、多年生黑麦草为主的人工混播草地产草量的影响 ,结果表明 :随着施肥量增加 ,鲜草产量明显提高 ,不同施肥量处理间产量差异达极显著水平 (P<0 .0 1) ;随着基肥比例的增大 ,追肥比例的减少 ,鲜草产量反而降低 ,不同基肥比例处理间产量差异也达极显著水平 (P<0 .0 1)。另外 ,相同氮肥量条件下 3种施用方式处理与相应的鲜草产量间都成直线关系 (r5∶ 5=0 . 9771* * ,r6∶ 4 =0 .96 30 * * ,r7∶ 3 =0 .96 4 3* * )
The influence of fertilizer application rates and methods on forage yield in mixed sward, predominantly Lolium perenne and Festuca arundinacea , was tested by split-plot design. The results showed that green forage yield was significant difference ( P <0.01)among fertilizer application rates, green forage yield increased with the rates. Whereas response to ground fertilizer proportion increased and top fertilizer proportion decreased, green forage yield declined and was significant difference ( P <0.01) among those treatments. Linear positive correlation( P <0.01) between nitrogen application amounts and green forage yield was observed in all of the three ground and top fertilizer ratio treatments included 50%∶50% ( r =0.977 1), 60%∶40%( r =0.963 0) and 70%∶30%( r =0.964 3)。
出处
《草业科学》
CAS
CSCD
北大核心
2000年第4期13-16,20,共5页
Pratacultural Science
基金
贵州省科委基金项目!<优良禾草苇状羊茅在人工草地上的利用研究>专题内容之一
关键词
施肥量
施肥方式
混播草地
鲜草产量
牧草
fertilizer application rates
fertilizer application methods
mixed sward
green forage yield
