大庆市旅游景观植物早熟禾的配方施肥效果

为有效延缓大庆市旅游景观植物早熟禾的退化进程,提高观赏价值,在城市环境条件下,采用草坪生长对比试验研究了不同氮磷钾肥配施对其生长和质地的影响。结果表明:氮磷肥配施与施纯氮相比,可显著提高早熟禾叶片长度、植株高度和叶绿素a含量;前期可降低叶片宽度,后期效果不显著;氮磷肥配施还可改变早熟禾叶片的含水量,但处理间差异不显著。结论:氮磷肥配施可促进早熟禾生长,显著提高观赏价值。

Effect of Formula Fertilization on Tourist Landscape Plant Poa pratensis in Daqing City

In order to effectively delay the degradation process of P.pratensis in Daqing City and improve the ornamental value,the effects of combined application of NPK fertilizers on growth and features of P.pratensis were studied in urban environment.The results showed that the leaf length,plant height and Chlorophyll a content of P.pratensis applied with NPK fertilizers were significantly improved compared with that applied with only N fertilizer;The leaf width was reduced in the earlier stage,not significant in later stage;The moisture content in P.pratensis could be changed when applied with NPK fertilizers,but there was no significant difference between different treatments.Conclusion: Combined application of NPK fertilizers could promote growth of P.pratensis and significantly improve its ornamental value.