유기질 비료와 멀칭자재가 MM.106 사과 대목의 생장과 광합성에 미치는 영향
Effect of Organic Fertilizer and Mulch Sources on Growth and CO2 Assimilation in MM.106 Apple Trees
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본 연구는 여러 유기질 비료와 멀칭자재에 따른 MM.106 사과 대목의 생장과 광합성 동화량에 미치는 영향을 구명하기 위해서 수행되었다. 유기질 비료와 멀칭 자재의 무기성분 함량과 탄소/질소 비율(탄질비)은 수체 생육과 광합성에 영향을 주었다. 미생물이 유기태 질소를 무기태로 전환하기 용이한 이상적인 탄질 비를 나타냈던, 상업용 유기질 비료, 계분, 식물성 퇴비, 그리고 풀 멀칭구가 줄기생장과 SPAD 및 광합성 함량을 증가시켰다. 처리 5주 후에 SPAD 및 광합성 함량이 처리구에 의해 영향을 받았으며, 처리 6주 후에 줄기 생장 또한 처리구 간에 유의성을 나타냈다. 토양 내 무기태 질소 함량이 10~15mg․kg-1이었을 때 가장 효율적인 수체 생장과 발달을 나타냈으며, 질소함량은 생장과 발달에 유의적인 상관관계를 나타냈다.
Abstract
The study was conducted to investigate the effects of organic fertilizers and mulches on the growth and CO2 assimilation in MM.106 apple trees. Growth and CO2 assimilation of MM.106 apple trees grown in a greenhouse were affected by the nutrient concentrations and carbon (C) and nitrogen (N) ratio in the raw materials of organic fertilizers and mulches. The optimum C:N ratios, which makes microorganism convert the organic N into the inorganic N, were obtained in the organic fertilizer, poultry litter, green compost, and grass clippings, resulting in increasing single shoot height, SPAD, and CO2 assimilation. The SPAD and CO2 assimilation were affected by the treatments 5 weeks after the treatments, and then the tree growth was affected by the treatments 6 weeks later. The most efficient tree growth and development were observed in the 10 to 15 mg․kg-1 of the inorganic N in a soil, and the N was strongly related to the tree growth and development.
참고문헌 (12)
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