UC知道英语高手救急，小妹先谢谢了
来源：百度知道 编辑：UC知道 时间：2024/09/23 08:25:19
摘要：在西南大学草业科学试验田，探讨了白三叶（Trifolium repens）+苇状羊茅（Festuca arundinacea）混播草地建植时，基肥中N,P和K配比对当年草地群落组分和总产量的影响。结果表明，N,P,K的不同配比对白三叶和苇状羊茅早期期生长高度影响不显著，12月29之后差异明显，各处理之间呈显著性差异。其中在处理1（N:44.3gP:375gK:100g）下，高度最高，达61.01cm；总产草量也最高，地上部分鲜重干重分别达294.61g，157.42g。地下生物量鲜重干重分别达25.54g，14.335g。在混播草地中，播种时最适宜的施肥量为纯N 5Kg/亩，K2O 10Kg/亩，P2O5 10Kg/亩。
关键词：N,P,K 混播草地 施肥水平
When the southwest university grass industry scientific experimental plot, discussed white three (Trifolium repens) + the reed shape sheep fescue (Festuca arundinacea) to mix broadcasts the lawn constructed plants, in base fertilizer N, P and K allocated proportion to the same year lawn community component and ultimate output influence. The result indicated that the N, P, K different allocated proportion dialog three and the reed shape sheep fescue early time time grows the influence not to be highly remarkable, 29, differences are after in December obvious, between each processing assumes the significance difference. And in processes 1 (N:44.3gP:375gK:100g), highly is highest, reaches 61.01cm; The total output grass quantity is also highest, the aerial parts fresh weight dry weight respectively reaches 294.61g,157.42g. The underground biomass fresh weight dry weight respectively reaches 25.54g,14.335g. In mixes broadcasts in the lawn, when sowing seeds is suitable quantity fertiliz