不同氮磷施用量对园林草坪早熟禾生长的影响

Effect of Different Nitrogen and Phosphorus Fertilizer on Garden Lawn Poa pratensis L. Growth

通过试验研究了不同氮磷施用量对早熟禾生长的影响,以期为城市园林草坪合理施肥提供理论依据。试验设置4个处理,N、P2O5用量分别为T1:0 kg·hm-2,T2:37.71 kg·hm-2,T3:41.90 kg·hm-2;T4:46.09 kg·hm-2,小区试验设计,3次重复。结果表明:6月份T4处理的鲜质量、基部叶长、株高均显著高于对照,7—10月T3株高处于最高值,显著高于对照;7—10月T3、T4基部叶长度显著高于对照;7—9月基部叶质地T3、T4均显著高于对照,10月无显著差异;植株含水量6月份氮磷处理显著高于对照,其余月份与对照之间无显著差异;7—10月T3株高处于最高值,显著高于对照。综合分析认为,氮磷施用量在41.90 kg·hm-2以上可以较好地促进早熟禾植株生长。

The test studied Poa pratensis L. grow changes with different nitrogen and phosphorus fertilizer which in order to provide a theoretical basis for urban landscape lawn rational fertilization. The test set 4 treatment, T1 to T4, N, P205 used 0,37.71, 41.90,46.09 kg·hm^-2,plot experiment designed and repeated 3 times. The results showed that fresh weight, the base of the leaf length, plant height of T4 treatment were significantly higher than the control in June, during July to October, T3 height was the highest value, was significantly higher than the control; during July to October, T3, T4 basal leaf length was significantly higher than the control; during July to September, basal leaf texture with T3, T4 were significantly higher than the control, no significant difference in October; plant water content of nitrogen and phosphorus treatment was significantly higher than that of control and other month was no significant difference with control; During July to October, T3 height was the highest value and was then significantly higher than the control. Comprehensive analysis thought that nitrogen and phosphorus fertilizer above 41.90 kg·hm^-2 could significantly promote the growth of Poa pratensis L. plant.