초록

AI-Helper

답토양(畓土壤)에 삼요소(三要素) 및 규산질비료(珪酸質肥料) 150kg/10a, 250kg/10a를 10여년간(餘年間)('75-'84) 매년연용시(每年連用時) 년차간(年次間) 벼수량(收量)의 변화(變化)와 토양(土壤)의 이화학적(理化學的) 성질변화(性質變化) 및 10년차(年次)('84)의 벼 생육(生育)과 경엽 및 곡실(穀實)의 영양상태(營養狀態)를 분석(分析)하여 수량반응(收量反應)에 미치는 영향(影響)을 비교검토(比較檢討)한 결과(結果)는 다음과 같다. 1. 10개년간(個年間)의 평균정조수량(平均正租收量)은 삼요소(三要素) 대조구(對照區)에 비(比)하여 규산(珪酸) 150kg/10a 연용구(連用區)는 16%의 증수효과(增收効果)가 있었으나, 규산(珪酸) 250kg/10a 연용구(連用區)는 다소(多少) 감수(減收)되는 경향(傾向)이었다. 2. 수확기(收穫期) 식물체(植物體) 경엽중 가리(加里)의 흡수량(吸收量)과 정조수량(正租收量) 및 대중과는 정(正)의 유의상관(有意相關)이 인정(認定)되었다. 3. 규산(珪酸)150kg/10a 연용구(連用區)는 250kg/10a 연용구(連用區)에 비(比)하여 질소(窒素), 인산(燐酸), 가리등(加里等)의 흡수량(吸收量)은 많았으나, 반면(反面) 석회(石灰), 고토(苦土), 그리고 규산(珪酸)의 흡수량(吸收量)은 적었다. 특(特)히 타양분(他養分)에 비(比)하여 질소(窒素)의 이용율(利用率)이 현저(顯著)히 높았으나, 반면(反面) 규산(珪酸)의 이용율(利用率)은 낮았다. 4. 규산(珪酸)250kg/10a 연용구(連用區)는 150kg/10a 연용구(連用區)에 비(比)하여 질소(窒素), 가리(加里) 및 규산(珪酸)의 곡실(穀實)로의 전이율(轉移率)이 현저(顯著)히 감소(減少)되었다. 5. 10개년간(個年間) 평균치(平均値) 및 10년차(年次)의 토양중(土壤中) 유기물(有機物) 함량(含量)은 증수효과(增收効果)가 컸던 규산(珪酸)150kg/10a 연용구(連用區)가 가장 많았고, 수량(收量)이 다소(多少) 감수(減收)된 규산(珪酸)250kg/10a 연용구(連用區)는 유기물(有機物)의 함량(含量)은 적었으나 유효규산(有効珪酸)의 함량(含量)은 가장 많았다.

Abstract ▼ AI-Helper

This study was conducted to evaluate the effect of annual application of silicate fertilizer on rice yield and soil physico-chemical properties. Field experiment was done on the condition of fertilization of silicate fert. 150 and 250kg/10a to the clay loam paddy field for ten years from 1975 to 198...

This study was conducted to evaluate the effect of annual application of silicate fertilizer on rice yield and soil physico-chemical properties. Field experiment was done on the condition of fertilization of silicate fert. 150 and 250kg/10a to the clay loam paddy field for ten years from 1975 to 1984. Data for rice growth and nutrient uptake was analyzed for ten years base. The results obtained are as follows. 1. Average unhulled rice yield for 10 years increased at 16% in the treat of silicate fert. 150kg/10a annually applied in comparison with the N.P.K treated plot, but silicate fert. 250kg/10a treated plot was decreasing tendency somewhat in yield. 2. Amount of potassium uptake of rice straw at the harvesting stage was positively significant recognized with unhulled rice yield and straw yield of rice plant. 3. The amounts of N, $P_2O_5$ and $K_2O$ uptake in the treat of silicate fert. 150kg/10a were much more than those of silicate fert. 250kg/10a treated plot. However the treat of silicate fert. 250kg/10a increased the amounts of CaO, MgO and Silica uptake than other treats markedly. Especially the treat of silicate fert. 150kg/10a was higher in nitrogen recovery rate than other nutrients recovery rate, but the recovery of silica was low. 4. The treat of silicate fert. 250kg/10a annually applied markedly decreased the translocation rate of nitrogen, potassium and silica from straw to the unhulled rice grain. 5. Ten years' average value of soil O.M. content was much more in the treat of silicate fert. 150kg/10a which show higher yield increase than other treats, but in the treat of silicate fert. 250kg/10a, soil O.M. content was lower, however silicate content in soil was the most among other treats.