신개간지토양(新開墾地土壤)에서 석회비종(石灰肥種)이 대두(大豆)의 생육(生育) 및 수량(收量)에 미치는 영향(影響)

Effect of lime types on growth and yield of soybean at newly reclaimed soil

야산개간지(野山開墾地) 토양(土壤)의 숙전화(熟田化) 및 수양증대(收量增大)를 위(爲)해 전북(全北) 김제(金堤)에서 소석회중화량(消石灰中和量), 석회약토중화량(石灰若土中和量), 황산석회(黃酸石灰), 소석회중화량(消石灰中和量)의 1.5배(倍), 석회약토중화량(石灰若土中和量)의 1.5배(倍)를 처리(處理)하여 수행(遂行)한 시험결과(試驗結果)는 다음과 같다. 1. 처리간(處理間)에 대두(大豆)의 수량(收量)은 석회약토중화량(石灰若土中和量) 1.5배(倍)>소석회중화량(消石灰中和量) 1.5배(倍)>석회약토중화량(石灰若土中和量)>황산석회(黃酸石灰)>소석회중화량(消石灰中和量)>관행순(慣行順)으로 높았으며 1 % 수준(水準)에서 유의성(有意性) 있게 증가(增加)하였다. 2. 수양구성요소(收量構成要素)와 개화기(開花期) 식물체중(植物體中)의 무기성분(無機成分) 함량(含量)(T-N, $P_2O_5$, CaO 및 Mgo)과는 유의적(有意的) 정상관(正相關)이었으나 Mn과는 유의적(有意的) 부상관(負相關)이었다. 3. 수량(收量)과 개화기(開花期) 식물체중(植物體中)의 MgO, CaO와는 유의적(有意的) 정상관(正相關)이었으나 Mn 함량(含量)과는 유의적(有意的) 부상관(負相關)이었다. 4. 개화기(開花期) 토양중(土壤中)의 무기성분함량(無機成分含量)은 시험전(試驗前)보다 높았으며 염기포화도(鹽基飽和度)와 수량(收量)은 유의적(有意的) 정상관(正相關)이었다.

This experiment was conducted to mature newly reclaimed upland and to increase soybean yield at this upland, Kim Jae, Jeon Buk, Koera from 1987 to 1988. Lime, lime-magnesium and calcium sulfate were applied with two, levels, amount of lime requirement, and 1.5 times of lime requirement. The results were summarized as follows: 1. The yields of soybean among treaments were in order of lime-magnesium 1.5 times, lime 1.5 times, lime-magnesium, calcium sulfate, lime and control with significancy at 1% level. 2. Correlations between yield components and inorganic element contents (T-N, $P_2O_5$, CaO and MgO) in plant at flowering stage were positive, but manganese in plant was negative at 5%, respectively. 3. Correlations, between yields and MgO and CaO contents in plant at flowering stage were positive, but Mn in plant was negative at 5% respectively. 4. Inorganic element contents of the soils at flowering stage were higher than those of before experiment. Correlation between yield and base saturation degree in soil at flowering stage was positive at 5%.