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朴華性,朴興變,具滋玉 全南大學校 農漁村開發硏究所 1981 農業科學技術硏究 Vol.16 No.2
, The experiment was conducted to know the reasonability of tillage effects by the treatments of different depths(0, 5, 13, and 27㎝) under the conditions of various cropping (soybean, peanut, corn, red-pepper and carrot), at the college farm of COA/CNU, Kwangju. The year of 1980 was characterized by the excessive precipitation, low light intensity and low temperature during the growing periods. The study was the preliminary summarized in scope of three volumetric changes of soils(solid-, liquid-, and gaseous phases) as affected by cultural practices mentioned above. The results obtained were as follows; 1. Volummtric ratio of solid phase was readily increased as crop advanced. This seemed to be caused mainly by excessive precipitation during the year. 2. Significant increment of liquid portion in the plots of deep tillage was detected only at early growth in the most of crops. 3. Gaseous portion which is a most critical factor on crop root elongation and proliferation was signifcantly varied by tillage depths until the late season of crop growth. 4. For the root crops(ex. carrot), possibly deep tillage is rather recommended to losening and granulation of soils than minimum or zero tillage. 5. For the cereal crops (ex. corn), leguminous(ex. soybean) and red-pepper croppings, possibly minimum or zero tillage are recommended to rationalize farm economy. 6. More detailed studies on soil physical components should be followed to know the exact and directed reasons of tillage operation on the various cropping, respectively.
朴華性,朴與燮,鄭淳柱 全南大學校 農漁村開發硏究所 1983 農業科學技術硏究 Vol.18 No.1
本 試驗은 몇가지 韓國産 무우品種을 供試하여 이들의 生態的인 反應을 生長解析法을 利用하여 檢討하므로써 適正栽培法 및 品種改良을 爲한 基礎資料를 얻기 爲하여 遂行한 結果를 報告한다. 1. 葉面積指數는 發芽後 繼續 增加했고 진주대평무우가 0.34㎡/㎡로 가장 높게 나타났으며 알타리무우가 0.20㎡/㎡로 가장 낮게 나타났다. 2. 最大個體生長率은 2.29g/㎡/day였고, 미농조생무우와 太白무우가 他 品種보다 높게 나타났다. 이들 값은 穀類作物의 個體生長率보다는 훨씬 낮게 나타났다. 3. 純同化率은 生育初期에 높게 나타났고 生育後期에는 낮게 나타났으며 太白무우와 쥐꼬리무우는 Water Stress와 같은 不適環境條件에 대한 適應力이 높은 것으로 나타났다. 4. 相對生長率은 純同化率과 同一한 傾向이었다. 5. 葉面積重量比에서 쥐꼬리무우와 太白무우가 他 品種보다 낮게 나타나 葉이 두꺼워짐에 따라 乾物生産能力이 높게 나타났다. 6. 葉面積指數와 個體生長率, 純同化率은 Watson의 法則과 一致했으며 太白무우의 適正葉面積指數는 0.23㎡/㎡이고, 쥐꼬리무우는 0.19㎡/㎡로서 쥐꼬리무우가 더 빨리 適正葉面積指數에 도달했다. In order to investigate the suitable cultivating practices and varietal improvement in the selected Korean radishes, the analysis of its growth and statistical observation of its growth functions were carried out means of growth analysis. The results obtained are summarized as follows; 1. Leaf area index(LAI) was sharply increased after germination. LAI was highest in Jinjudaepyong radish of 0.34㎡/㎡, but in Altari radish was shown to be the lowest of 0.20㎡/㎡. 2. Maximum crop growth rate (CGR) was 2.29g/㎡/day. Minongjoseng and Taebaek radish were high than the other cultivars. These values were by far lower than those of gramineous crops. 3. Net assimilation rate (NAR) was high in early stage and low in late stage of growth Tabaek and Juikory radish were considered to be more adaptive to unfavorable conditions, especially in water stress. 4. Relative growth rate (RGR) was shown to the same trend with NAR. 5. In specific leaf area (SLA) Juikory and Tabaek radish were lowered than the other cultivars so that the dry matter production showed increases according as the leaf became thicker. 6. The relationships between LAI and CGR, NAR was agreed to the watson's law. Optimum leaf area point(LAI opt.) of Taeback radish was 0.23㎡/㎡, and Juikori radish was 0.19㎡/㎡. Accordingly, Juikori radish was reached at the optimum leaf area point rapidly.
朴華性,金光秀,鄭淳柱,具滋玉 全南大學校 農漁村開發硏究所 1981 農業科學技術硏究 Vol.16 No.1
收穫特性이 相異한 園藝作物中 根葉類인 당근과 果采類인 고추를 利用하여 耕耘深度別로 4個處理를 하여 耕耘深度의 差異가 采蔬作物의 生育特性變化에 影響하는 程度를 檢土해서 園藝作物栽培의 省力化 및 經營의 合理化를 期하기 爲하여 試圖되었다. Tractor를 利用한 深耕區, 쟁기를 利用한 慣行區, 耕耘機에 依한 Rotary區 및 除草劑 paraquat를 利用한 無耕耘區로 處理하였다. 그 結果를 要約하면 다음과 같다. 1. 당근은 耕耘深度가 깊을 수록 葉面積, 葉重의 增加를 보였고, 無耕耘區에서는 耕耘區에 比해서 減少하는 傾向이었다. 2. 당근의 根長. 根重은 耕耘深度가 깊을 수록 增加되었다. 無耕耘區에서는 根長과 根重이 極히 減少했고, "hairy root"가 많은 것이 特徵이었다. 3. 당근의 根徑 및 Core徑은 全生育期間을 通해 直善的인 增加를 보였으나 耕耘深度에 따라 有意差가 認定되지 않았다. 4. 耕耘深度別 고추의 側技分化, 莖長, 莖重 및 莖直徑에는 有意差가 認定되지 않았다. 5. 고추의 葉面積, 葉重은 耕耘深度에 따라 有意差는 認定되지 않았으나 無耕耘區에서 生育初기에 增加된 것은 無耕耘의 利点인 土壤水分維特와 養分吸收에 有利하기 때문인 것으로 생각된다. 6. 고추의 根重은 耕耘深度가 깊을 수록 根系發達이 不良하게 나타났고, 收量은 處理間에 有意差가 없었다. 따라서 比較的 淺根性인 果采類栽背에 無耕耘의 利用可能性이 認鄭되었다. The study was conducted to know the compatibility of carrot(Daucus carota L. var. sativa DC.) and pepper(Capsicum annum L.) culture under the various tillage systems as no-tillage(NT), rotary only(RO), conventional tillage(CT), and deep tillage(DT). The DT system seemed to obtain higher index of leaf area and leaf weight than NT. Also the root length and weight of carrot increased with the depths of tillages. This was caused by some advantages in DT system making better conditions for root growth and proliferbtion. Excessive "hairy" root on carrots was detected mainly in the RO and NT systems. However, the stem diameter and core diameter of carrot plants have not showed any significant differences among the tillage depths. Number of branch differentiated of pepper also showed no significances but the early incremint of leaf area and leaf weight from the NT system was considered to be appropriate the soil moisture retention and nutrient uptake as an advantage of NT system. Being a shallow rooted crop, the root weight of pepper plant was readily decreased in DT system where is unfavorable for the proliferbtion of root system. Pepper yields from the treatments with tillage depths showed no significant differences to be concluded for the shallow rooted fruit vegetables have feasibility in use of NT system. Further studies should be followed to know more detailed mechanics on the nutrient uptake, soil type and other problems.