초록 ▼

Ⅳ. 연구개발결과
○ 유박 처리구간에는 전면시비 처구와 비교하여 작물 근권 줄뿌림 처리구가 다른 처리구와 비교하여 옥수수 줄기의 생체중, 알곡의 무게와 수량 등이 높게 나타났으며, 근권줄뿌림 시비가 양분이용 측면에서 본다면 보다 효율적으로 활용되어진 것으로 판단된다.
○ 배추 유기재배 시 녹비재배와 액비 활용 양분관리로 관행과 비슷한 수량이 가능하였고 토양중 무기태 질소가 안정적으로 유지되고 질소 흡수이용율도 높음
○ 질소공급을 위해 깻묵+미강+건조효모를 이용한 액비 제조 방법과 액비의 양분특성을 구명하고 배추 재배

Ⅳ. 연구개발결과
○ 유박 처리구간에는 전면시비 처구와 비교하여 작물 근권 줄뿌림 처리구가 다른 처리구와 비교하여 옥수수 줄기의 생체중, 알곡의 무게와 수량 등이 높게 나타났으며, 근권줄뿌림 시비가 양분이용 측면에서 본다면 보다 효율적으로 활용되어진 것으로 판단된다.
○ 배추 유기재배 시 녹비재배와 액비 활용 양분관리로 관행과 비슷한 수량이 가능하였고 토양중 무기태 질소가 안정적으로 유지되고 질소 흡수이용율도 높음
○ 질소공급을 위해 깻묵+미강+건조효모를 이용한 액비 제조 방법과 액비의 양분특성을 구명하고 배추 재배에 적용함
○ 인산공급을 위해 미강, 골분, 건조효모를 이용한 액비제조 방법을 구명
○ 콩대와 깻대를 이용한 칼륨공급을 위한 액비 제조방법 및 효과 구명
○ 해조류를 이용하여 미량요소 공급을 위한 액비 제조방법 및 효과 구명

Abstract ▼

These studies were investigated to develop the application technique of organic fertilizers such expeller cake, green manure and organic liquid fertilizer. The first experiment for application technique of expeller cake was conducted at the new experimental field of NAAS, located in Isoe-myeon, Wanj

These studies were investigated to develop the application technique of organic fertilizers such expeller cake, green manure and organic liquid fertilizer. The first experiment for application technique of expeller cake was conducted at the new experimental field of NAAS, located in Isoe-myeon, Wanju-kun, Jeollabuk-do. The monitoring research carried out the growth state of the corn during 3 years depending on expeller cake application rate, depth, technique, and types. The several expeller cake input treatment including spread, banding, deep banding, and banding+spread were applied. The corn plant length, stem diameter, leaf number and color (SPAD value) for all treatment was similar except control. The fresh and dry weight of corn plant and corn on banding treatment was improved compare to spread, deep banding and banding+spread treatment. The banding technique has potential devolvement of high fertilization use efficiency.
The second study was investigated to develop the application technique of green manure from 2012 to 2014 at the experimental field of NAAS, located in Mangpo-dong, Suwon city. The growth and yield of chinese cabbage by supplied hairy vetch treatment in spring cultivation was similar quantities compare to conventional farming treatment. The green manure treatment was enhanced resistant from damage caused by high temperature compare to chemical fertilizer treatment. On the other hand, the yield of chinese cabbage for double cropping of green manure treatment and green manure + expeller cake treatment in autumn cultivation was similar quantities compare to conventional farming treatment. In conclusion, organic fertilizer input system by green manure and organic liquid fertilizer application has potential improvement of fertilization use efficiency for chinese cabbage cultivation.
The third study was carried out to investigate changes in the characteristics of inorganic components in organic liquid fertilizers according to the type and content of microorganism and the content of molasses when producing organic liquid fertilizers using organic resources. When producing organic liquid fertilizers using sesame oil cake and rice bran, the content of NH₄-N increased with time and in proportion to the content of dry yeast. When producing organic liquid fertilizers using bone meal and rice bran by adding dry yeast and molasses, addition of dry yeast to liquid fertilizer resulted in little change in pH, considerable increase in EC, and it showed high EC value compared to the control which has no additives. Also, it was appeared that the dry yeast-added treatment had higher at 2,936 mg·L^-1 of NH₄-N concentration than the control which had 1,782 mg·L^-1. In the other hand, addition of molasses resulted in low pH and slightly low EC, as compared to the control. NH₄-N concentration in the no added molasses treatment was 2,936 mg·L^-1 higher than its molasses added treatment which had 2,378 mg·L^-1. In conclusion, it was shown that addition of dry yeast to liquid fertilizer increased ammonium nitrogen concentration by accelerating nitrogen mineralization, while molasses has an effect of inhibiting nitrogen mineralization and enhancing the characteristics of fermentation.