본 연구는 신간척지에서 벼 기계이앙재배시 염 피해가 적으면서 안정적인 쌀수량 확보를 위하여 모 종류를 어린모, 치묘, 중묘, 폿트묘로 새로 조성된 간척지인 새만금 계화포장에 이앙하여 수행한 내용을 요약하면 다음과 같다. 1. 2년 평균 토양염농도는 이앙전 0.16%에서 환수후 이앙 직후에는 0.04%로 낮아졌다. 2. 모 종류별 출수기는 폿트묘 이앙이 8월 14일인데 비해중묘이앙은 2일, 치묘이앙은 3일, 어린모이앙은 5일 늦게 출수되었다. 3. 도복관련형질에서 중묘이앙이 도복지수가 가장 높아 포장도복 역시 중묘이앙이 반도복 정도 되었다. 4. 수량구성요소를 보면 이앙모 종류별 등숙비율과 현미천립중은 비슷하였고, 주당수수는 치묘>어린모>폿트묘>중묘이앙 순으로 많았으며, 쌀수량은 어린모=치묘>폿트묘>중묘이앙 순으로 많았다. 5. 이앙모 종류별 쌀 품질에서 완전립비율은 치묘>중묘=어린모>폿트묘 순으로 높았고, 아밀로스함량과 단백질 함량은 이앙모 종류간 차이가 없었다. 결론적으로 새로 조성된 간척지에서 벼를 기계이앙재배할 때 안정적인 쌀 수량 확보를 위한 적정 이앙모는 어린모와 치묘가 적합하다고 판단된다.

The purpose of this study was to research about salt marsh flora and vegetation in the Dongjin-river estuary area where has a project for Sea Man Geum Reclaimed Land so that we can foster foundation on restoration of an ecological habitat, development of applicable plant and establishment of a conservation policy after deceloping the reclaimed land for salt marsh vegetation which has great value ecologically. In conclusion, we was distributed that there are 7 families 21 genera, 25 species, 2 varieties of vascular plant at the Dongjin-river estuary area which have 27 taxa in total and are 0.64% among 4,191 of korean vascular plant. There are also 2 family, 2 genus, 2 species of a naturalized plant which are 1.1% of indicator of a naturalized plant salt marsh vegetation of the downstream are very much affected by the time of inundation, tidal water so that a low degree of salt marsh has frequent flooding by sea water and has a pure group of Suaeda japonica. A Phragmites communis, Carex scabrifolia are distributed mainly around a waterway of salt marsh and Zoysia sinica, Atriplex subcordata, Phragmites communis are living in stock as forming into patch around medium salt marsh. Suaeda asparagoides, Phacelurus latifolius are living around a little high ground and a Phragmites communis is a behind vegetation of Phacelurus latifolius and a part of the Phragmites communis are living along with waterway in a salt marsh as a community. By the Z-M method twelve plant communities were recognized ; Suaeda japonica, Carex scabrifolia, Zoysia sinica, Artemisia scoparia, Phacelurus latifolius, Phragmites communis, Suaeda maritima, Suaeda japonica-Atriplex gmelini, Phragmites communis-Suaeda japonica, Suaeda japonica-Salicornia herbacea, Salicornia herbacea-Suaeda asparagoides and Scirpus planiculmis community. The actual vegetation map was constructed on the grounds of the communities classified and other data.

CCA (Canonical Correspondence Analysis) was used so as to analyze the relation between vegetation and soil environment of Mankyeong river located in Jeollabuk-do. Vegetation survey consulted 1:5,000 topographical map, set up 30 plot and analyzed from June, 2001, to september, 2001. Plant communities of Mankyeong river was investigated by phytosocialogical method. The species composition of plant communities showed high correlation to soil pH, soil organic matter, P2O5, total nitrogen, EC, when they were analyed by CCA. According to the results of CCA hydrophyte communities were distributed in the region that high pH. But the vegetation of disturbed site and wetland plants were distributed in a good nutrients.