不同施氮量对旅游景观早熟禾生长的影响

在城市环境条件下,设置4个氮用量处理,研究施用氮肥对早熟禾生长的影响。结果表明:早熟禾株高B3和B4处理之间无显著差异,但均显著高于对照;观赏叶长度B3、B4处理均显著高于对照,B2处理与对照之间无显著差异;7—9月份B3和B4处理叶片宽度显著高于对照,B2处理仅7月份显著高于对照;施用氮肥可以较好的促进早熟禾叶绿素含量提高,其中B3和B4处理显著高于对照;施用氮肥还可以改变早熟禾植株含水量,但是各处理之间无显著差异。综合分析认为,氮肥施用量为41.90kg·hm-2为佳。

Effect of Different Nitrogen Levels on the Growth of Tourism Landscape Poa pratensis

The effect of different nitrogen levels on Poa pratensis growth in the urban environment was studied with 4 nitrogen treatment. The results showed that the plant height of Poa pratensis was no significant difference between the treatment of B3 and B4, and was significantly higher than the control; ornamental leaf length with B3, B4 treatment was significantly higher than the control and was no significant difference between the B2 treatment and control; leaves width of B3 and B4 treatment was significantly higher than the control from july to september,B2 treatment was significantly higher than the control only in july; nitrogen fertilizer could increase the chlorophyll content of Poa pratensis and B3 and B4 treatment was significantly higher than the control; Poa pratensis nitrogen fertilizer could change the water content in plant but no significant difference between each treatment. comprehensive analysis thought that the nitrogen fertilizer of 41.90 kg·hm-2 was better.