보고서 정보
주관연구기관 |
국립농업과학원 National Institute of Agricultural Sciences |
보고서유형 | 최종보고서 |
발행국가 | 대한민국 |
언어 |
한국어
|
발행년월 | 2014-12 |
과제시작연도 |
2014 |
주관부처 |
농촌진흥청 Rural Development Administration(RDA) |
등록번호 |
TRKO201500010345 |
과제고유번호 |
1395035054 |
사업명 |
농업기초기반연구 |
DB 구축일자 |
2015-07-11
|
DOI |
https://doi.org/10.23000/TRKO201500010345 |
초록
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Ⅳ. 연구개발결과
○ 제 1세부과제 : 영농유형별 양분수지 평가
- 축산밀집지역, 복합영농지역, 시설재배지, 이모작 재배지의 가축분뇨 유래 양분발생량 평가결과 축산밀집지역이 가장 높았으며 질소질 138 kg/ha, 인산질 108 kg/ha, 칼리질 135 kg/ha의 양분량을 공급할수 있는 것으로 산정되었다. 반면 잠재적 양분 잉여도를 분석한 결과 시설재배지에서 질소, 인산, 칼리질이 각 각 293, 953, 361%로 가장 높게 분석되었다
- 1990년부터 2011년까지의 가축분뇨 발생량 변화를 평가한 결과 199
Ⅳ. 연구개발결과
○ 제 1세부과제 : 영농유형별 양분수지 평가
- 축산밀집지역, 복합영농지역, 시설재배지, 이모작 재배지의 가축분뇨 유래 양분발생량 평가결과 축산밀집지역이 가장 높았으며 질소질 138 kg/ha, 인산질 108 kg/ha, 칼리질 135 kg/ha의 양분량을 공급할수 있는 것으로 산정되었다. 반면 잠재적 양분 잉여도를 분석한 결과 시설재배지에서 질소, 인산, 칼리질이 각 각 293, 953, 361%로 가장 높게 분석되었다
- 1990년부터 2011년까지의 가축분뇨 발생량 변화를 평가한 결과 1990년대비 2011년이 약 36%증가하였고, 시군별 가축분뇨 유래 양분발생량을 지도화하였음.
○ 제 2세부과제 : 지역단위 농경지 양분 부하량 평가
- 양돈, 한육우, 양계 밀집 시군을 대상으로 농경지 양분 필요량과 양분 공급량을 분석한 결과 농경지 단위면적당 양분 필요량은 시군별 차이가 크지 않았으나 가축사육밀도에 따라 양분 부하 정도가 다르게 평가되었음.
- 한육우 밀집 남부지역에서 벼-하파귀리-호밀 삼모작을 재배했을 때 퇴비 무시용구와 퇴비 시용구의 작물 수량을 분석한 결과 퇴비 시용구에서 하파귀리 수량이 높았고, 다음해 벼수량 또한 퇴비 시용구에서 높게 나타나 수량 증진에 도움이 될 것으로 판단되었으며, 퇴비를 시용하지 않더라도 사료작물을 재배하면서 남는 그루터기 등 작물 잔재에 의해 토양유기물 함량이 다소 증가하였고, 퇴비를 시용한 구는 토양유기물 함량과 유효인산 함량이 높아진 것으로 나타났음. 양분수지를 분석한 결과 볏짚을 환원했을 때와 퇴비를 토양검정 추천량 1회 시용구의 질소 수지는 비슷하였으나 인산 수지는 퇴비 시용구에서 높았으며, 퇴비 시용량이 많을수록 질소와 인산수지가 높아져 퇴비 시용량이 많을 때에는 무기질 비료 사용량을 줄여야 할 것으로 판단됨.
Abstract
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The livestock manure is a good source of major plant nutrients such as nitrogen, phosphorus and potassium and micronutrient that plants require. As aspect of establishment of nutrient management policy in nation scale, the use of livestock manure for agricultural purpose is a key factor for improvin
The livestock manure is a good source of major plant nutrients such as nitrogen, phosphorus and potassium and micronutrient that plants require. As aspect of establishment of nutrient management policy in nation scale, the use of livestock manure for agricultural purpose is a key factor for improving national nutrient balance.
Nutrient balance in Korea has been influenced by increasing of livestock feeding heads and intensive agriculture. To make a decision nutrient management in agriculture, it is important to analyze nutrient input by livestock manure and nutrient requirements in region unit.
In this study, we try to assessment of amount of nutrient supply by livestock manure by farming type(livestock concentrated area, combined agriculture area, double crop area, and cultivation under structure area) and tendency of livestock manure production and amount of chemical fertilizer from 1990 to 2011 used in Korea. we evaluated nutrient input(fertilizer, livestock manure) and nutrient requirement of arable land in pig, Korean cattle, poultry concentrated region. Nutrient surplus depended on livestock density in unit arable area, because nutrient requirements per unit arable area was mostly similar.
The result of NPK nutrient surplus was higher in livestock concentrated area than the other areas(N surplus 201%, P surplus 247%, K surplus 176%). The number of pig and chicken has been increased about two times in 2011 compared with 1990 and therefore livestock manure continually increased with the lapse of year, but cattle and dairy was not changed significantly. The chemical fertilizer consumption of nitrogen, phosphorus and potassium per hectare arable land was decreased by 54.6, 66.0 and 63.2% in 2011 compared with 1990, respectively. In contrast, the potential input of nitrogen, phosphorus and potassium to arable land through livestock manure was increased by 220, 210 and 210% during this period, respectively.
Soil chemical properties were analyzed about livestock concentrated and non-concentrated area in each region. Avail. P2O5 was higher in livestock concentrated area, and soil organic matter was not different between livestock concentrated and non-concentrated area. Therefore, it is necessary to support the livestock manure recycling in the area, and monitoring of soil nutrient contents needs to minimize nutrient surplus.
As case study for nutrient balance improvement, nutrient balance and soil chemical properties was evaluated when rice-forage triple cropping system was applied to Korean cattle concentrated region in south area. Cattle compost applied to rice → summer oat → rye cropland in Jangheong county from 2013 to 2014 in this study. The cattle compost applied plots were composed of NPK, NPK+rice straw application, NPK+1 time application of compost by soil testing, NPK+2 times application of compost by soil testing, NPK+ compost application of same amount with carbon loss contents by rice straw harvesting, NPK+ compost application of same amount with carbon loss contents by rice straw and rye harvesting. Rice yields in 2013 was not different between plots, but yields of summer oat and rice of next year were higher in compost treated plots than NPK and NPK+rice straw application plots. Soil organic matter of NPK plot was increased by crop residue, and soil organic matter and Avail. P2O5 were increased as the more compost application amount. Nitrogen balance in NPK+rice straw application plot was same with NPK+1 time application of compost by soil testing, but Phosphate balance in NPK+1 time application of compost by soil testing plot was higher than NPK+rice straw application plot because phosphate content in compost was more than rice straw. Compost application amount had an effect on nutrient balance increasing, therefore, fertilizer application rate should be regulated to decrease nutrient balance.
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