한국토양비료학회지 (Korean Journal of Soil Science and Fertilizer)
- 제7권3호
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- Pages.155-161
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- 1974
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- 0367-6315(pISSN)
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- 2288-2162(eISSN)
벼에 대한 규산질비료(珪酸質肥料)의 분시효과
Application effect in split doses of silicate fertilizers on rice plant
- Lee, Yun Hwan (Institute of Agricultural Science, Office of Rural Development) ;
- Shin, Chan Soo (Institute of Agricultural Science, Office of Rural Development)
- 심사 : 1974.06.13
- 발행 : 1974.09.20
초록
약제(藥劑) 무방제상태(無防除狀態)에서 벼에 대한 규산질비료(珪酸質肥料)의 분시효과를 검토(檢討)한 결과(結果) 규회석(珪灰石)이나 합성고농도규산용융물(合成高濃度珪酸熔融物) 공(共)히 전량기비구(全量基肥區)의 규산흡수량(珪酸吸收量)이 전생육기간(全生育期間) 가장 높았으며 생육(生育)이 진행(進行)됨에 따라 분시구(分施區)의 짚중규산함량(中珪酸含量)과의 차이(差異)는 좁혀지고 수확기(收穫期)에는 거의 차이(差異)가 없었다. 비종간(肥種間)에 있어서는 역용성(易溶性) 규산용융물(珪酸熔融物)의 비효가 규회석(珪灰石)보다 높았으며 추비효과도 현저(顯著)하였다. 분시(分施)에 의(依)하여 무방서(無防徐)에 의한 50%의 엽도열병(葉稻熱病) 이병률(罹病率)을 규회석(珪灰石)은 20~40%로 감소(減少)시켰고 합성고농도규산용융물(合成高濃度珪酸熔融物)은 5~15%로 감소(減少)시켰다. 또한 수수도열병(穗首稻熱病)도 무방제구(無防除區)의 50% 이병율(罹病率)을 각각(各各) 20%로, 10%로 감소(減少)시겼다. 즉 규산질비료(珪酸質肥料)의 시비시기(施肥時期)는 전량기비(全量期肥)가 가장 우수(優秀)하나 추비(追肥)로써도 사용(使用)될 수 있으며 최고분벽기(最高分蘗期) 이전(以前)에 시용(施用)되어야 하고 추비용(追肥用) 규산질비료(珪酸質肥料)는 난용성물질(難溶性物質)보다 유효규산함량이 높고 역용성(易溶性) 규산용융물(珪酸熔融物)을 사용(使用)하는 것이 추비효과를 높일 수 있으나 미세분말(微細粉末)의 풍산(風散)과 엽부착등(葉附着等)을 고려(考慮)한 시비방법(施肥方法)이 모색(摸索)되어야겠다.
In order to investigate the effect of split application of silicate fertilizers on the rice plant, this studies, designed with two kinds of silicate material, wollastonite and high concentrated fused silicate material, and 4 types of application dates on the pot experiment without chemical control against diseases, have conducted the silica analysis of rice plant and diseased rates of plant during the all growing stages. The silica contents in rice plant with basal application were increased most highly compared with the split applications during the all growing stage, but they were all much the same between the basal and split application at the harvest. High concentrated fused silicate material was more useful to increase the silica content in rice plant than wollastonite and effect of split application of silica was dominant with this fused silicate material. The diseased leaf area by rice blast was decreased from the 50% of uncontrolled plot to 20~40% by the split application with wollastonite and to 5~15% with high concentrated fused silicate material. Also percents of deseased panicles were decreased to 20% with wollastonite and to 10% with high concentrated fused silicate material.
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