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규산질 비료는 잔디에 있어서 생육과 밀도 향상 효과가 인정되고 있다. 대부분 슬래그 규산질 비료를 사용하고 있지만 최근에는 수용성 규산염을 원료로 한 규산질 등이 개발되어 시판되고 있다. 본 연구에서는 수용성 규산염에 대한 연구가 미흡한 실정으로 수용성 규산 시용에 따른 한국 잔디의 생육과 토양화학성 변화를 알아보고자 수용성 규산($SiO_2$) 함량별 처리 후 와그너포트 시험과 잔디 재배지 포장시험을 수행하였다. 수용성 규산 무처리구에 비해 수용성 규산 함량이 높을수록 근장, 지상부와 포복경의 생체중과 건물중, 한국잔디의 밀도가 유의성 있게 증가하였으며, 식물체내 조규산 함량은 유의하게 증가하였으나 토양 화학성에는 유의한 차이가 없었다. 수용성 규산 함량 18과 $36{\mu}lml^{-1}$ 처리구간의 유의한 차이가 크지 않아 적정 수용성 규산 함량은 $18{\mu}lml^{-1}$으로 판단되었고, 식물체 내 조규산의 공급원으로서 수용성 규산을 토양에 직접시비보다는 엽면시비로 한국잔디의 생장에 기여할 수 있을 것으로 판단된다.


Silicate fertilizers known to be effective in improving the growth and density of zoysiagrass. Most silicate fertilizers being used in Korea are slag-originated silicate fertilizer, but some water soluble silicate fertilizers are commercially available recently. This study was conducted to know the effect of water soluble silicate fertilizer, on the growth of zoysiagrass and the change of soil chemical properties in Wagner pot and field experiment. Root length, fresh and dry weight of shoots and stolons, the number of shoots and stolons, total of stolons length and the $SiO_2$ content of internal plant were significantly increased by the $SiO_2$ content but chemical properties of the soil were not significantly changed by the $SiO_2$ content. The $SiO_2$ contents of 18 and $36{\mu}lml^{-1}$ did not show significance difference, and therefore a reasonable application the content of $SiO_2$ was thought to be $18{\mu}lml^{-1}$. Foliar spray of water soluble silicate fertilizer is believed to enhance the growth and density of zoysiagrass than soil application.

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참고문헌 (34)

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