Oak Mushroom Cultivation on Larch(Larix leptolepis Gorden) sawdust and its economic efficiency

낙엽송 톱밥을 이용(利用)한 표고버섯 재배(栽培)와 경제성

To enhance the utilization of Larch(Larix leptolepis Gorden) wood, the sawdusts were tested as cultivating media for Lentinus edodes(Mori 290) by varying the composition of the media. The economic efficiency for producing mushrooms from larch sawdusts was evaluated. The results are as follows. 1. Larch sawdust was as much efficient as oak sawdust in the growth of the mycelia and production of good quality of oak mushrooms. 2. The mushrooms were able to be harvested starting six months after beginning the cultivation. No differences were found among the qualities of the mushrooms produced by various treatments. 3. The contents of lignin(28.6-28.7%) in the fresh sawdust of larchwood are higher than those in the residues of the used media(18.2%). But lignin content of 1% NaOH extracts(30.4-34.4%) in fresh sawdust of larch was lower than those in the residues(68.0%). 4. The production of mushroom was relatively high to be 29.7-31.5%(760-780g.)/2.5kg pack) of mushroom weight. The net profit estimated was 1,475Won per pack.

이 연구는 낙엽송 목재를 톱밥으로 만들어 표고버섯의 균상재배를 함으로써, 목재이용률을 높이고, 버섯을 효율적으로 재배할 수 있는 방법과 경제성을 조사한 것이다. 그 결과는 다음과 같다. 1. 낙엽송 톱밥을 이용한 표고재배에서 참나무톱밥재배와 비교하여 볼 때 균사발육이나 버섯품질에 차이가 없는 것으로 나타났다. 2. 낙엽송 톱밥재배는 종균접종후 6개월부터 제 1차기 버섯수확이 가능하면서 품질에 있어서도 각(各) 처리구간(處理區間)에 차이가 없는 것으로 나타났다. 3. 낙엽송재의 Lignin함유량은 28.7-28.6%이었으나 버섯재배 폐(廢)잔사는 18.2%로 감소되었다. 그러나 1% NaOH 추출성분은 낙엽송재의 것은 30.4-34.4%이었으나 표고재배 폐(廢)잔사의 것은 68.%로 증가하였다. 4. PP비닐대(袋) 1개(2500g입)당 표고버섯 총생산비율은 29.7-31.5%의 높은 값으로 나타나고, 이때 버섯생산량은 760-780g으로 그 순수익은 1,475원이었다.