• 제목/요약/키워드: Suffolk Kentucky bluegrass(Poa pratensis)

검색결과 1건 처리시간 0.016초

한국잔디(Zoysia japonica)와 'Suffolk' Kentucky bluegrass(poa pratensis)에서 지소지용 수준이 토양중 ${NH_4}^+$-N와 ${NO_3}^-$-N 함량에 미치는 영향 (The Effects of Nitrogen Fertilization Levels on the Content of ${NH_4}^+$-N and ${NO_3}^-$-N in Soil of Zoysiagrass(Zoysia japonica ) and 'Suffolk' Kentucky Bluegrass(Poa pratensis))

  • 김성태;육완방;이정재;김인섭;함성규
    • 아시안잔디학회지
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    • 제9권3호
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    • pp.207-212
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    • 1995

  • This experiment was conducted to investigate the effect of the nitrogen fertilization levels on the content of $NH_4^+$-N in soil of 'Suffolk' Kentucky bluegrass and zoysiagrass. The results obtained are summarized as follows : 1.According to the nitrogen fertilization levels, the content of $NH_4^+$-N in soil of Kentucky blue-grass and zoysiagrass was not significantly different. The content of $NH_4^+$-N in soil of Kentucky bluegrass and zoysiagrass was highest in June and December and lowest in March and September. 2.The content of $NH_3^-$-N in soil was increased by increasing the nitrogen fertilization levels in both Kentucky bluegrass and zoysiagrass. However, the deeper the depth of soil the less the content of $NO_3^-$-N in soil. In 40~60cm soil depth, the content of $NO_3^-$-N in soil was lower than 10ppm in average. Even in June, which was the highest month of the content of $NO_3^-$-N in soil, the content of $NO_3^-$-N in soil was not overpassed the degree of 20ppm.

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