논문 상세보기
pp.70-75
본 연구는 유기재배 배 과수원 시비에 있어서 화학비료 대체를 위한 녹비작물 재배 이용기술 개발을 확립하고자 파종방법에 따라 토양에 무기성분 환원량과 이에 따른 배나무 생장에미치는 영향을 구명하기 위해서 수행되었다. 파종방법은 전남보성의 배 과수원 독농가에 방임초생, 호밀(16 kg/10 a) 단파, 헤어리베치(5 kg/10 a) 단파, 호밀(6.4 kg/10 a) +헤어리베치(3 kg/10 a) 혼파로 나누어서 2007년에 10월에 처리하였다. 녹비작물의 줄기수는 단파처리가 혼파처리보다 월등히 많았다. 처리별건물중은 관행 방임 초생은 362kg/10a로 두 초종의 혼파 처리(856 kg/10 a)보다 낮았다. 전질소 환원량은 두 녹비작물의 혼파처리가 13.9 kg/10 a으로 관행대비 2.1배 높았다. 혼파처리는인산과 칼륨 환원량을 증가시켰고, 10-12년생 배나무 생장을위해 필요로 하는 질소(10 kg/10 a), 인산(2 kg/10 a), 칼륨(7 kg/10 a)을 충족시켰다. 방임초생 재배는 가장 높은 토양 용적밀도와 가장 낮은 공극율을 나타내었다. 배나무 잎은 예초후에 질소, 인산, 칼륨 농도가 증가되었고 과실 품질은 처리간에 별다른 차이가 관찰되지 않았다.
This study was conducted to evaluate the effects of mix- and single-seeding of green manure crops, such as rye and hairy vetch, on the nutrient contribution and growth of 'Niitaka' (Pyrus pyriforia L.) pear trees, in order to develop utilization of green manure crops as an organic nutrient source in a pear orchard. The experiment was conducted at an organic orchard in Boseong in Chonnam Province, Republic of Korea, and the treatments followed as; 1) sod culture, 2) rye (16 kg/10a), 3) hairy vetch (5 kg/10a), and 4) rye (6.4 kg/10a) + hairy vetch (3 kg/10a), which were sown on the orchard floor on October of 2007. Mix-seeding of rye and hairy vetch resulted in higher number of shoots than singleseeding of rye or hairy vetch. Sod culture produced 362 kg/10a of dry weight, which was lower than those of plots treated with mix-seeding of rye and hairy vetch (856 kg/10a). Mix-seeding treatment produced 13.9 kg/10a of N from raw materials in the green manures, which was 2.1 times greater than those of the sod culture. Mix-seeding increased both P and K productions and satisfied the amounts of N (10kg/10a), P (2kg/10a), K (7kg/10a) for 10-12 year-old pear tree growth. Sod culture treatment increased bulk density but decreased porosity. Concentrations of foliar N, P, and K in pear trees increased from May to July after vegetation around trees were mowed. There were non-significant differences for fruit quality amongst the plots treated with green manure crops.
