Slow Release Fertilizer Decreases Leaching Loss of Nitrogen in Sand-based Root Zone

완효성비료의 모래식재지반에 있어서 질소용탈의 감소

  • Chen, Wei-Feng (Institute of Turfgrass Science, Shandong Agricultural University, Effects of Chitosan on the Growth Responses of Kentucky Bluegrass (Poa pratensis L.)) ;
  • Wei, Wang (Institute of Turfgrass Science, Shandong Agricultural University, Effects of Chitosan on the Growth Responses of Kentucky Bluegrass (Poa pratensis L.)) ;
  • Ying-Jie, Qi (Institute of Turfgrass Science, Shandong Agricultural University, Effects of Chitosan on the Growth Responses of Kentucky Bluegrass (Poa pratensis L.))
  • 첸웨이펭 (중국산동농과대학교 잔디과학연구소) ;
  • 왕웨이 (중국산동농과대학교 잔디과학연구소) ;
  • 퀴잉제 (중국산동농과대학교 잔디과학연구소)
  • Published : 2007.12.31

Abstract

When a football field is constructed using sand medium, the fertilizer management has to be adjusted because of the low nutrient holding capacity and higher leaching rate. The objective of this study was to test the effects of slow release fertilizers on Kentucky bluegrass (Poa pratensis L.) growth in simulated sport field rootzones with PVC pipe pots. Data of turfgrass color, uniformity, growth rate, biomass above ground, and the nitrate content in the leaching solution was collected at different growing stages and during four simulated rain fall periods. The result showed that the nutrient release rate of urea was the highest and that of controlled release nitrogen fertilizer was the lowest. Effects of the controlled release nitrogen fertilizer lasted 14 days more than other lawn fertilizers and 28 days longer than regular urea with acceptable quality levels of turf. The slow release fertilizer also restrained excessive growth of the grass, reduced the times of mowing. Slow release fertilizer used in this study reduced $NO_3$-N leaching by almost 50% at the beginning of turf establishment.

축구장의 식재지반이 모래로 조성될 경우 낮은 보비력과 높은 용탈율로 인해 시비관리의 조정이 필요하다. 본 실험의 목적은 PVC관을 이용한 경기장 유사모형 실험구에서 캔터키 블루그래스에 있어서 완효성비료의 생육 효과를 비교 실험하였다. 잔디의 색깔, 균일도, 생육, 지상부 생체량과배출수의 질산의 유출량을 몇 가지 다른 생육상과 네 번의 유사 강우 시험 시 행하였다. 실험 결과 요소의 성분 유출량이 가장 높았고 공시 완효성비료는 가장 낮았다. 이 완효성 비료는 다른 공시 잔디비료에 비해 14일간, 요소보다는 28일간 잔디의 품질 면에서 비효가 지속되었다. 또한 이 완효성비료는 잔디의 웃자람과 잔디깎기에 소요되는 시간을 줄일 수 있었다. 질산태 질소의 유출에 있어서도 잔디의 조성 초반기에 50% 정도를 감소 시켰다.

Keywords

References

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