논문 상세보기
pp.12-21
우리나라의 남부지역에서 콩의 비닐피복 재배시에 적정파종시기를 구명하고자 본 시험에서 주요 특성 및 수량성을 비교한 결과는 다음과 같다.
1. 비닐피복재배에서 파종기가 빠를수록 그리고 영양생장기 중 V6 stage 까지는 생육일수가 많이 단축되었으나 그 이후는 단축효과는 점차로 적었다.
2. 콩의 개화에 필요한 평균소요일수는 노지재배에서 컸고 성숙에 필요한 평균소요일수는 비닐피복 재배에서 컸다.
3. 콩의 비닐피복 재배시 R5 stage의 건물중은 노지재배보다 무겁고 엽면적지수도 최적엽면적지수인 5~7의 범위에 포함되었다.
4. 비닐피복 재배시 5월 25일 및 6월 10일 파종에서 콩의 립수가 많고 백립중이 무거워 수량이 높았다
5. 단백질함량은 비닐피복 재배에서 낮고 파종기간 차이가 없었으며 지방함량은 재배양식 및 파종기간 비슷하였다. 한편비닐피복 재배시 지방산 C18:1의 함량은 5월25일 및 6월 10일 파종에서 많았고 C18:3은 재배양식 및 파종기간 차이가 없었다.
6. 아이소플라본 함량은 비닐피복 재배에서 그리고 파종기가 늦을수록 많았다.
Nowadays P. E. film mulching for weed control and moisture preservation is popular in soybean cultivation of southern region of Korea. Some merits of P. E. film mulching are moisture preservation, soil aggregation, weed control and growth promotion due to increase soil temperature. The rearrangement of seeding date of soybean is necessary to prevent overgrowth of soybean and promote healthy growth. As global warming increases average world temperature, the demanding of re-establishing soybean cultivation system, such as seeding date, has been increased. Therefore, we discussed seeding date accompanying maturity types as soybean was cultivated on condition of P. E. film mulching. Four varieties, Saeol, Seonyu, Daewon and Pungsannamul were seeded on May 10, May 25, June 10 and June 25 in P. E. film mulching and non-mulching field. It is required more mean days of flowering in nonmulching and more days of maturity in P. E. film mulching. In R5 stage completed organ structure dry matter weight was heavier and LAI was ranged 5 to 7 which was optimum LAI. Number of pods and number of seeds per plant in P. E. film mulching were higher on June 25 seeding and 100-seed weight was heavier through all seeding date of P. E. film mulching. Seed yield in P. E. film mulching cultivation was higher on May 25 and June 10 seeding. Occurrence of damaged seeds showed no difference between two cultivation types and among seeding dates. Major diseases and insect pests were bacterial pustule, black root rot, wild fire and stink bugs. And that, occurrence of root rot and stink bugs influenced to yield decrease. Protein content of soybean seed in P. E. film mulching was lower in all seeding dates. Fatty acid compositions showed no difference between two culivation types and among seeding dates. But C18:1 composition was higher on May 10 and May 25 seeding in P. E. film mulching cutivation and C18:3 composition was similar between two cultivation types. Isoflavone content was higher in P. E. film mulching cultivation and higher as seeding date was delayed. Summerizing above results optimum seeding date for P. E. film mulching cultivation ranged from May 25 to June 10 in southern region of Korea.
