한국초지조사료학회지 (Journal of The Korean Society of Grassland and Forage Science)

  • 제24권1호
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  • Pages.11-20
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  • 2004
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  • 2287-5824(pISSN)
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  • 2287-5832(eISSN)
한국초지조사료학회 (The Korean Society of Grassland and Forage Science)
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Orchardgrass 및 White Clover의 단파 및 혼파 재배에서 미량요소(Fe, Mn, Cu, Zn, Mo, B)의 조합시비가 목초의 여러 특성에 미치는 영향 IV. 목초 중 미량요소(Fe, Mn, Cu, Zn, Mo, B)의 함량 변화

Effects of Combined Micronutrient(Fe, Mn, Cu, Zn, Mo and B) Application on Forage Traits in Pure and Mixed Swards of Orchardgrass and White Clover IV. Changes in the contents of micronutrients in forage plants

  • 발행 : 2004.03.01
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초록

Orchardgrass 및 white clover의 단파 및 혼파 재배조건에서 미량요소 Fe, Mn, Cu, Zn, Mo및 B의 조합시비가 목초의 생육, 개화, 수량, 양분 함량 및 식생구성비율 등에 미치는 영향을 구명하였다. 다량요소 양분을 동일 량 시비한 조건에서 7 수준의 미량요소 조합시비는 $T_1$;대구조, $T_2$; Fe, $T_3$; Fe＋Mn, $T_4$: Fe＋Mn＋Cu, $T_5$; Fe＋Mn＋Cu＋Zn, $T_6$ ; Fe＋Mn＋Cu＋Zn＋Mo 및 $T_7$ ;Fe＋Mn＋Cu＋Zn＋Mo＋B로 하였다. 본 IV보에서는 조합시비가 목초 중 미량요소의 함량에 미치는 영향을 검토하였다. 1. 미량요소의 함량은 일반적으로 조합시비, 초종(grass-clover), 재배방법(단파-혼파), 예취 회수 및 추비 유무별 차이를 보였다. 단파재배와 비교해서 혼파에서 orchardgrass는 더 낮은 B와 Fe-함량, 더 높은 Mn, Zn-함량을 보였고 white clover는 이의 반대경향을 보였다. 그러나 Cu와 Mo-함량은 차이를 보이지 않았다. 2. 상대적인 함량 비교에서 일반적으로 $T_7$ 7처리로 orchardgrass의 경우 Cu, Zn 및 Mo-함량은 낮아졌고 Mn-함량은 높아졌다. 이에 비해서 white clover의 경우는 Fe, Mn 및 Cu-함량은 높아졌고 그리고 Mo-함량은 낮아졌다. 목초 중 Fe-함량은 $T_3$(Fe＋Mn)에서 Fe과 Mn 간의 길항작용으로 현저히 낮아졌다. 본 시험재배 조건별 Fe-함량의 변화는 white clover가 orchardgrass보다 상대적으로 더 큰 차이를 보였다. Mn-함량은 초종 간 큰 차이를 보였고 두 목초 공히 Mn을 함유한 조합시비로 크게 증가하였지만 이들 조합시비 간에는 차이가 경미하였다. 3. Mo-함량은 모든 경우 $T_6$ 6및 $T_7$ 에서 다소 높은 수준 이였다. $T_7$ 은 $T_6$ 에 비해서 Mo-함량이 다소 낮아졌다. Mo-과다피해는 B/Mo 비율의 조화 또는 B-시비를 통해서 경감되거나 방지할 수 있는 것으로 보였다. 모든 경우 white clover가 orchardgrass보다 B-함량이 높았고 $T_7$ 에서 B-함량이 크게 증가하였다.

This pot experiment was conducted to investigate the effects of combined micronutrient application($T_1$;control, $T_2$; Fe, $T_3$; Fe＋Mn, $T_4$: Fe＋Mn＋Cu, $T_5$ ; Fe＋Mn＋Cu＋Zn, $T_6$ ; Fe＋Mn＋Cu＋Zn＋Mo, $T_7$ ;Fe＋Mn＋Cu＋Zn＋Mo＋B) on forage performance of pure and mixed cultures of orchardgrass and white clover. This 4th part was related to the changes in the contents of micronutrients(Fe, Mn, Cu, Zn, Mo, and B) in forages. The results obtained are summarized as follows: 1. General differences have been showed in the contents of micronutrients based on the treatments, forage species, pure/mixed culture, cutting order, and additional fertilization, especially N. Compared to pure culture, orchardgrass showed relatively high contents of Mn and Zn, and low contents of B and Fe in mixed culture. White clover, however, tended to be exactly opposed to the above trends. The contents of Cu and Mo did not show any differences between pure and mixed cultures. 2. In relative comparison, the $T_7$ influenced negatively on the contents of Cu, Zn, and Mo in orchardgrass. The $T_7$ also influenced negatively on the contents of Mo in white clover. However, the $T_7$ influenced positively on the contents of Mn in orchardgrass, and also influenced positively on the contents of Fe, Mn, and Cu in white clover. Because of the antagonism between Fe and Mn, the Fe contents in both forages were significantly decreased by the $T_3$. Under the various conditions, the differences among Fe contents tended to be more significant in white clover than in orchardgrass. 3. At the $T_6$ and $T_7$, the Mo contents in both forages tended to be relatively high. The Mo contents, however, were somewhat decreased by the $T_7$ 7/. The Mo-toxicity, which was caused by the high Mo-contents, tended to be diminished, and was likely to be prevented by the optimum B/Mo ratio and B application($T_7$ ).

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