聚合物包膜尿素氮释放特性及其对高羊茅草坪生长的影响

• 作 者: 谷佳林 许俊香 徐秋明 边秀举 李会彬 曹兵
• 机 构: 北京市农林科学院植物营养与资源研究所,河北农业大学草坪研究所,
• 出 处: 园艺学报
• 发表日期: 2009年03期
• 关键词: 草坪 高羊茅 包膜尿素 初期溶出率 微分溶出率 草坪质量 溶出率 一次性施用 养分释放 施肥试验

通过静态水溶试验和草坪施肥试验,研究了高分子聚合物包膜尿素(PCU)的养分释放特性及春季一次性施用对高羊茅草坪生长的影响。结果表明,由于肥料所处环境温度不同导致实验室静态水溶法测定PCU养分释放速度快于其在田间的实际释放速度。田间试验中一次性施用该肥料可以满足高羊茅草坪整个春季生长对氮素养分的需要;与尿素和市场上的草坪肥料相比,草坪质量无显著差异,且草坪生长速度均匀,草屑量相对较少,起到了减少草坪修剪次数降低养护强度的作用。

Through the static water solubility test and the lawn fertilization test, the nutrient release characteristics of high polymer polymer coated urea (PCU) and the effect of single application in spring on the growth of tall fescue turfgrass were studied. The results showed that due to the different ambient temperature of the fertilizer, the laboratory static water-soluble method determined the release rate of PCU nutrient faster than its actual release rate in the field. The one-time application of the fertilizer in field experiments could meet the need of nitrogen nutrient in the growth of tall fescue turf during spring. Compared with urea and market-based turf fertilizers, there was no significant difference in the turf quality and lawn growth rate was uniform, Relatively few, play a role in reducing the number of lawn pruning reduce conservation strength.