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利用草本植物白花三叶草为基点,对其分蘖密度、株高、叶绿素、盖度变化和氮磷、氮钾、氮肥与腐殖酸配合为试验处理,探索天水市旅游旺季区位和绿化地白花三叶生长时间关系。结果表明试验氮肥与磷肥配施显著提高分蘖密度,其他处理不显著;氮肥与磷肥、腐植酸混合显著提高白花三叶草盖度,氮钾配施不显著;氮磷配施显著提高草坪观赏叶色素含量。分析认为天水市旅游景观白花三叶草养护肥以氮磷配施效果最佳,与天水市城区土壤盐碱较重有关。草坪建植后植物生长旺季时间区位与天水旅游黄金期相吻合,3~4a后会出现明显的退化现象,景观优势度明显下降。为研究采取配方施肥的方式促进草坪生长,提高白花三叶草景观优势度和生长期,减缓草坪的退化提供参考。
Using the herbaceous white clover as a starting point, we investigated the changes of tillering density, plant height, chlorophyll, coverage and the combination of nitrogen and phosphorus, nitrogen, potassium, nitrogen and humic acid in the grassland. Growth time relationship. The results showed that the combination of nitrogen fertilizer and phosphate fertilizer significantly increased the tillering density, while the other treatments were not significant. The nitrogen and phosphorus combined with humic acid significantly increased the cover of white clover and the combination of nitrogen and potassium was not significant. . The analysis shows that Tianshui tourism landscape white clover conservation fertilizer with nitrogen and phosphorus with the best effect, and Tianshui City soil salinization heavier. The turfgrass plantation growth season time location coincides with the golden period of Tianshui tourism, after 3 ~ 4a, there will be obvious degeneration phenomenon, landscape dominance decreased significantly. In order to study the way of formula fertilization to promote lawn growth, improve the white dwarf clover landscape dominance and growth period, slow down the degradation of turfgrass provide a reference.