야산(野山) 개간지(開墾地) 토양(土壤)에서 땅콩의 생육(生育) 및 수량(收量)에 미치는 석회시용효과(石灰施用效果)

Effect of Lime Application on Growth and Yield of Peanut at Newly Reclaimed Upland Soil

야산개간지(野山開墾地) 토양(土壤)에서 땅콩재배시(栽培時) 공협방지(空莢防止)를 위(爲)해 전북(全北) 김제(金堤)에서 소석회중화량(消石灰中和量), 소석회중화량(消石灰中和量) 1.5배(倍), 석회고토중화량(石灰苦土中和量), 석회고토중화량(石灰苦土中和量) 1.5배(倍)를 처리(處理)하여 시험(試驗)을 수행(遂行)한 결과(結果)는 다음과 같다. 1. 수량(收量)은 소석회중화량(消石灰中和量)(231kg/10a)에 비(比)하여 석회고토중화량(石灰苦土中和量) 1.5배시용구(倍施用區)가 27% 증수(增收)하였으며, 공협수(空莢數)도 석회고토중화량(石灰苦土中和量) 1.5배시용구(倍施用區)가 10.5개로 가장 적었다. 2. 성숙기(成熟期) 식물체중(植物體中)의 MgO함량(含量)은 주당분지수(株當分枝數), 건물중(乾物重), 협수(莢數), 100입중(粒重)과 유의적(有意的) 정(正)의 상관(相關)이었으나 공협수(空莢數)와는 유의적(有意的) 부(負)의 상관(相關)이었다. 3. 성숙기(成熟期) 건물체중(植物體中)의 CaO, MgO함량(含量)은 협(莢)의 부피, 협(莢)의 표면적, 협 (莢)의 두께, 협(莢)의 무게와는 유의적(有意的) 정(正)의 상관(相關)이었다. 4. 성숙기(成熟期) 토양중(土壤中) Ca, Mg와 수량(收量)과는 각각(各各) $r=0.572^*$, $r=0.556^*$으로 유의적(有意的) 정(正)의 상관(相關)이었다.

This experiment was conducted to find a methode reducing peant empty pods when it was cultivated on a newly reclaimed upland soil in Kimjae, Jeonbuk, Korea. Liming materials, slaked lime and dolomite were applied to the soil at two levels : lime requirement amount neutralizing the soil and one of 1.5 times. The results are summarized as the followings. 1. There was a yield increase of 27% from the field applied 1.5 times amount of dolomite Compared to that of slaked lime. The number of empty pods per plant was at the lowest level with the treatment of higher amount of dolomite. 2. At the maturing stage of the plant there was a positive significant correlation observed between the content of MgO and other parameters such as no, of branchs per plant dry weight per plant, no, of pods per plant and 100 seed-weight. But the correlation between MgO content and the no of empty pods was negatively significant at 5% level. 3. The content of CaO and MgO was significantly correlated to hull and pod volumes, pod surface area, hull thickness and hull weight. 4. Correlation coefficients between yield and the contents of Ca and Mg in soil at mauring stage were $0.572^{**}$ and $0.556^{**}$ respectively.