돈분액비를 활용하여 경종 · 축산 연계를 통한 자원순환농업의 활용 및 녹비작물의 생산량을 증가시키기 위해 트리티케일 재배지에서 돈분액비 시용이 생육특성과 토양 화학성 변화 및 건물수량성에 대한 결과 요약은 다음과 같다. 초장에서는 LPM처리구에서 115.3cm로 대조구 대비 8.1% 양호하였으며 근장에서는 LPM 처리구에서 3.9cm 길었고 전체길이도 LPM처리구에서 132.3cm로 대조구 대비 9.9% 컸다. 건물체량은 대조구에 비하여 LPM처리구가 전 조사시기에서 높았으며 20% 이상 증가하였다. 대조구의 시험후 토양의 유기물 함량은 18.8g kg-1로 시험전 보다 높았으나, LPM처리구에서는 시험전 토양보다 낮은 14.1g kg-1이었다. 시험후 토양의 치환성 K는 LPM처리구에서 높게 나타난 반면, Ca, Mg 및 Na는 대조구에서 높았으며 시험전 토양에서 보다 낮은 경향이었다. 건물체량은 LPM처리구에서 대조구에 비하여 21.9% 증가하는 경향이었다.

he present study was conducted to provide basic data for efficient vermicomposting of swine manure by investigatingthe effect of rice hull mix on growth and reproduction of earthworms, amount of earthworm cast produced, and its chemicalcomposition when mixing swine manure in different levels (0 (SRH0), 10 (SRH10), 20 (SRH20), 30 (SRH30), and 40%(SRH40)) with rice hull commonly used as a bulking agent for facilitation in manure composting. The C/N ratio of thefeed was 10.19-13.95 and increased with higher level of rice hull mixed, and the survival rate of earthworms during theexperiment period was 35.2-99.2%. The biomass growth rate of earthworms was significantly higher in the SRH30 andSRH40 treatments than others (p<0.05), and young worms were not found in any treatments, but the number of cocoonswas 7.4 in the SRH40 treatment. The production of earthworm cast and digested amount were higher with the higherlevel of mixed rice hull (p<0.05), and the C/N ratio of cast increased with the mixed rice hull ratio, being significantlyhigher ratio in SRH40 than other treatments (p<0.05). Among heavy metals, the copper content tended to decrease withthe mixed rice hull level. To summarize, the higher level of mixed rice hull was associated with improvement in growth,reproduction, and cast production of earthworms, and 30-40% rice hull mix in particular could result in efficientvermicomposting.

This study was conducted to investigate the effect of different ratios of rice straw to swine manure as an earthworm feed on the change of physico-chemical characteristics and earthworm viability during composting, and further to provide the basic information for an efficient vermicomposting using the manure of livestock. Experimental earthworm used in this study was Eisenia foetida and the ratio of swine manure and rice straw was determined to 100:0(SM), 90:10(SRS10), 80:20 (SRS20), 70:30(SRS30) and 60:40(SRS40) on the basis of volume. The results are summarized as follows. Earthworm appeared after 8 week of aging period, and it was possible for the earthworm to survive in all the treatments. C/N ratio was significantly higher (P＜0.05) in the treatments of rice straw mixture (SRS30 and SRS40) than swine manure alone (SM treatment). Appropriate C/N ratio for earthworm survival was the range of 10.43 to 11.16. During the period of aging, pH value and electrolyticconductivity (EC) were the highest in the treatment of swine manure alone. However, as the inclusion of rice straw was increased, pH value and EC showed a decreasing tendency. Appropriate pH value and EC for earthworm survival were 7.7 to 7.8, and 2.72 to 4.59mS/㎝, respectively. The results from this study indicated that mixing swine manure with rice straw more improved more physico-chemical environment for earthworm growth in comparison with swine manure alone, and rice straw showed the sufficient possibility as a bulking agent for an efficient vermicomposting of swine manure.

돈분퇴비 시용시 산국 (Chrysanthemum boreale)의 수량과 유효성분들의 함량변화를 알아보고자 토양 16 kg이 충진된 와그너포트에서 돈분퇴비가 각각 0, 2000, 4000, 6000, 8000, 12000 kg 10a-1을 처리한 결과, 8000 kg 10a-1처리구에서 대조구보다 전체 수량과 꽃의 수량은 각각 5.9배 (195.0 g plant-1)와 24배 (21.7 g plant-1)가 증가한 것으로 조사되었다. 질소양분 이용율은 4000 kg 10a-1처리구가 66.6%로 가장 높았다. 꽃에서의 주요 아미노산은 proline (7.4~9.2 g kg-1)이였으며, 돈분퇴비의 시용량이 증가할수록 정의 상관관계를 보였다. Cumambrin A함량을 측정한 결과, 돈분퇴비 시용량에 의한 질소의 함량이 증가할수록 부의 상관관계가 나타났으나 (R2=-0.723, p〈0.01), 전체 수량면에서는 오히려 돈분퇴비의 시용량이 증가할수록 cumambrin A의 수량이 오히려 증가하였다. 이로서 돈분퇴비의 시용이 산국의 수량을 향상시킬 수 있을 것으로 기대되었다.

To clarify the proper and safe duration of maturation periods for sawdust　pig manure composts, leaf lettuces were applied with pig manure composts fermented for 15, 30, 45, 60, 75 days and 1 year (control) and cultivated in a plastic house with or without additional PE film tunnel. The changes in physiochemical properties of soil and leaf lettuce growth were measured. Shorter duration of maturation periods enhanced the generation of NH₃ gas from the composts and resulted in significant decrease in seed germination, growth and yield of leaf lettuce. Under with and without PE tunnel conditions the concentration of NH₃ from compost over 3.8 and 2.1 ㎎/100g composts, respectively induced growth reduction. In proportion to the increase of maturation duration saw　dust containing pig manure exhibited decrease in C/N ratio, NH₄⁺　N, NH₄⁺/NO₃ ratio but increase in NO₃ N contents. In case of applying pig manure compost without PE film tunnel condition the minimum maturation period of pig manure composts for safe leaf growth was 60 days, while minimum 75 days of maturation was required when applied with PE film tunnel.