This study intended to collect data for evaluating the meteorological value of Upo Wetland which is the largest wetland in the downstream of Nakdong River. The observations were conducted in summer at the Upo Wetland and its surrounding paddy field that is the converted areas from a wetland to a paddy field. The following results are obtained: 1) The temperature of Upo Wetland area was 1˚C lower than the surrounding area during the day while it was a little higher during the night.; 2) The maximum wind speed in the Upo Wetland area was 3.5 m/s which is stronger than 1.6 m/s of its surrounding area. The south wind was observed in the farmland for most of the day while north winds and south winds alternated between day and night in Upo Wetland.; 3) In heat budget analysis, Upo Wetland was wasted in the form of latent heat rather than sensible heat in daytime.

본 시험은 천안시 성환읍에 위치한 배수가 불량한 논에서 사료작물재배를 위해 암거배수 간격을 3 m, 5 m 그리고 7 m로 처리하고 여름 사료작물로는 옥수수와 수수수수 교잡종, 겨울 사료작물로는 청보리를 조합하여 옥수수와 청보리 조합, 수수수수 교잡종과 청보리 조합 등 2개의 작부체계에 대한 재배효과를 비교하기 위해 2006년 3월부터 2007년 5월까지 수행되었다. 배수간격별 출현율과 출수 시는 차이가 없었다. 출현율은 옥수수가 90%, 수수수수 교잡

This study was carried out to investigate the difference of the content of soil chemical components and growthcharacteristics in six years old ginseng affected by application of decomposing plant residues in paddy-converted field. Theresults show that aerial parts of ginseng are no difference between press cake (PC) 200㎏/10a and control but subterraneanparts of ginseng PC 200㎏/10a, especially quantity related root fresh weight and tap root diameter, are statically about 1.6times heavier and about 1.2 times thicker than the ginseng control. Furthermore, the survival rate of PC 200㎏/10a is67.1% rise significantly compare with the control 50.7%. But compared with the PC 200㎏/10a and the PC 400㎏/10a,ginseng root growth and survival rate of PC 400㎏/10a get worse and that increase physiological disorder occurrence ratethan PC 200㎏/10a. Even though there are no significant differences between the ginseng of decomposing plant residuesexcept press cake treatment and the ginseng of control in growth characteristics, it does tend to increase the survival rateand decrease the physiological disorder occurrence rate in most fertilizer treatment except for RSC 2ton/10a, RSC 4ton/10a and RH 4kL/10a. Noted that EC is highly increased and exceeded 1.7ds/m in RSC 2ton/10a, RSC 4ton/10a and RH4kL/10a. It would be caused physiological disorder in many ways and affected ginseng growth characteristics, survival rate.

This study was carried out to investigate the difference of the content of soil chemical components and growth characteristics in five years old ginseng affected by application of manure in paddy-converted field. As all livestock manure regardless of kinds increased along with the whole soil chemical component, including the pH and EC in 2008. Change in the EC of control plot was slightly increased but not exceeded 1 ds/m over the years. However, the changes in the EC of livestock manure regardless of kinds and amounts were highly increased and irregularly exceeded 1.5 ds/m in 2012. The 5 years old ginseng root fresh weight, treatment of fertilizing pig manure compost 4 ton per 10 areas (PMC 4t on/10a) and fowl manure compost 4 ton per 10 areas (FMC 4 ton/10a), were superior to the others. But there were no difference between PMC 4 ton/10a, FMC 4 ton/10a and control. The standing crop rate 39.6%, treatment of fertilizing cattle manure compost 4 ton per 10 areas (CMC 4 ton/10a), was best in all livestock manure. However that was relatively lower than control. Physiological disorder occurrence rates of livestock manure related with leaf and root of ginseng were also higher than that of control. If excessively using non-decomposed livestock manure, It would be caused physiological disorder in many ways. It is a big problem to be producing the quality ginseng. More research is needed to find out the economic and effective fertilizer.

밭전환 1년차 논의 토양물리성 악화를 개선하고 사료용 옥수수 생육을 증진시키기 위한 심토파쇄의 효과를 살펴본 결과 다음과 같은 결과를 얻었다. 1. 심토파쇄에 의해 토심 25~35 cm 층위의 토양의 경도가 크게 감소하였고 토층 15~30 cm에서 가밀도, 공극율 및 고상비율 등 하층토의 토양물리성이 개선되는 것으로 나타났다. 2. 심토파쇄 추가 시 옥수수의 간엽 및 이삭의 생육이 크게 증가하였으며, 특히 이삭당 립수의 증가가 이삭중을 크게 증가시키는 것으로 나타났다. 3. 심토파쇄 추가 시 옥수수는 이삭 및 간엽의 수량증가에 의해 TDN 수량이 19~39% 증가하였으며, 특히 습해에 의해 생육이 불량한 2011년도의 옥수수의 생육촉진 효과가 컸다.

The growth, yield and chemical properties of waxy corn Sonjajang~timesKNU-7 and Asan~timesKNU-7 planted in different dates and mulch types in a converted paddy field was investigated. Experiment was carried out in a randomized complete block design in a split split-plot arrangement with four replications. Planting dates (D) [May 16 (D1, early), June 1 (D2, middle), June 6 (D3, late)] represented main plots, plastic mulch (M) [(BM, black mulch; TM, transparent mulch)] for subplots while waxy corn crosses [Sonjajang~timesKNU-7 (‘Sonja’) and Asan~timesKNU-7 (‘Asan’)] for sub-subplots. Results showed that D had a significant effect on growth characters except emergence, ear quality except ear diameter, and yield whereas M showed significant effect on growth characters only. Superior growth and ear quality performance were recorded in D1 and BM. In terms of crosses, ‘Sonja’ had better growth performance than ‘Asan’ regardless of D and M, but performed better at D1 and BM. Highest yield was obtained in D1 for BM (2,131 kg 10a-1 ) and TM (1,655 kg 10a-1 ) but no significant difference in the yield across V was recorded. In terms of starch and sugar contents, a decreasing trend was observed from D1 to D3 regardless of M and V.

남부지방의 답전환전에서 나물콩인 은하콩과 광안콩을 5월 15일과 6월 16일의 두 파종기를 두어 명거배수와 지표배수에서 재배하여 이에 대한 생육 및 수량을 알아 본 결과 다음과 같다. 1. 개화기까지의 경장, 마디수, 분지수는 배수처리에 따른 차이는 없었지만 답전환전이 밭보다는 짧거나 적었고, 파종기가 늦을수록 답전환전에서 길거나 많았다. 2. 개화기까지의 줄기 및 뿌리의 생체중은 배수처리에 따른 차이는 없었지만 답전환전이 밭보다는 적었고, 파종기가 늦을수록 은하콩에서 증가하였다. 3. 개화기의 줄기 및 뿌리의 생체중은 수량과 각각 고도의 정의 상관을 나타내었고, 근류수와 근류중도 고도의 정의 상관을 나타내었다. 4. 도복은 배수처리간 차이는 없었으며 5월 15일 파종보다 6월 16일 파종시 심하였고, 은하콩이 광안콩보다 덜 심했다. 5. 협수 및 100립중은 배수처리에 따른 차이는 없었으며, 100립중은 파종기가 늦을수록 은하콩은 무거웠고 광안콩은 가벼워TEk. 균일도는 5.00∼5.60mm에서 배수처리간 차이는 없었지만, 파종기가 은하콩은 늦을수록 낮아지고 광안콩은 높아지는 경향이었다. 6. 수량은 지표배수에서 명거배수보다 높았으며, 은하콩은 6월 16일 파종시에서, 광안콩은 5월 15일 파종시에서 높은 수량을 보였다.