연구보문 : 콩 비닐피복 재배시 최적적심방법 연구 = Research Papers : Screening of Optimum Decapitation Method in Vinyl Muching Cultivation of Soybean

국문 초록 (Abstract)

콩의 비닐피복 재배시에 최적적심 방법을 구명하고자 본 시험에서 적심방법별 주요 특성 및 수량 비교한 결과는 다음과 같다. 1. R5 stage의 건물중은 두 품종 모두에서 V8 stage의 순적심과 개화시 적심에서 많았는데 이들 처리는 대원콩에서는 무처리 보다 가벼웠고 신부석태에서는 무처리 보다 무거웠다. 그리고 이들 처리는 최적엽면적 지수을 확보하였다. 2. 포장도복은 V8 stage의 순적심에서는 발생하지 않았고 개화시 적심에서는 2~5 정도의 도복이 발생하였다. 3. 개화기는 품종별 처리간 모두 같았고, 성숙기는 대원콩에서 1~2일의 차이를 보였지만 신부석태는 차이가 없었다 4. 종실비대기간인 R5 stage에서 R7 stage까지의 두 품종 평균 순동화량(NAR)은 V8 stage의 순적심과 개화시 적심에서 비슷하면서 가장 높았다. 5. 두 품종 평균수량은 V8 stage의 순적심과 개화시 적심에서 가장 높았다. 6. 외관적 품질에서는 V8 stage의 순적심에서 백립중이 가장 무거웠고 미숙립 및 다른 피해립율도 낮았다.

다국어 초록 (Multilingual Abstract)

This experiment was carried out to make clear optimum decapitation method for yield increase of soybean and to reduce lodging as soybean is cultivated in vinyl mulching. Results are as follow; In R5 stage, dry matter weight in two varieties was higher in V8 (terminal) treatment and flowering initiation stage treatment which were lighter than control in Daewon and heavier in Sinbuseoktae. Also, LAI(Leaf Area Index) in these two treatments was suitable. Lodging index in V8 (terminal) treatment was not occurred whereas in flowering initiation stage treatment was ranged from 2 to 5. Flowering date in two varieties was not differant among five treatments and maturity date was similar. NAR (Net Assimilation Rate) from R5 to R7 stage was higher in both V8 (terminal) and flowering initiation stage treatment showing similar mean value. Although mean values was not significantly different, the yield of terminal decapitation in V8 stage which was similar to flowering initiation stage treatment was higher. Also, 100-seed weight of terminal decapitation in V8 stage was the heaviest and apparent seed quality was favorable. Consequently, the optimum decapitation method in vinyl mulching cultivation of soybean was terminal decapitation in V8 stage.