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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 effect of fertilizing amount and fertilization mode on the grass yield of artificial mixed sowing grass with tall fescue and perennial ryegrass was discussed using split-plot experimental design. The results showed that with the increase of fertilization amount, the yield of fresh grass was obviously (P <0.01). With the increase of the proportion of basal fertilizer, the proportion of topdressing decreased while the yield of fresh grass decreased, and the difference in the yield of different basal fertilizer proportion reached up to the same level Very significant level (P <0.01). In addition, there was a linear relationship between the three treatments and the corresponding fresh grass yield under the same conditions of nitrogen fertilizer (r5: 5 = 0. 9771 * *, r6: 4 = 0.96 30 * *, r7: 3 = 0 .96 4 3 * *)