不同施肥量、密度对美洲狼尾草产量的影响

Influence of Different Rate of Fertilizer Application and Plant Densities on the Yield of Pennisetum glaucum.

试验结果表明 ,美洲狼尾草的鲜、干草产量受不同栽培密度的影响较小 ,不同密度之间的鲜草、干草产量差异不显著 ,而对氮肥的施用量非常敏感 ,随施氮量的提高鲜、干草产量显著增加 ,在 0～ 45 0kg/hm2 纯氮情况下 ,其鲜、干草产量同施氮量之间呈线性关系 (r=0 .9994)。

The influence of different rate of fertilizer application and plant densities on the yield of Pennisetum glaucum was studied in this experiment. The results indicated that the influence of different densities on the yield of fresh grass and hay was minor, the differences of yield of fresh grass and hay between the different plant densities was insignificant, but the yield was sensitive to the rate of nitrogen fertilizer application. With the increasing of the rate of nitrogen fertilizer application, the yield of fresh grass and hay increased significantly. Under the condition of 0～450kg/hm\+2 nitrogen application, the relation between the yield of fresh grass and hay and the rate of nitrogen fertilizer application was linear (r=0.9994).