http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Hong Bae Yun Ye Jin Lee Myung Sook Kim Jwa Kyung Sung Yong Seon Zhang Sang Min Lee Suk Chul Kim(김석철) (검색결과 1 건)
- 무료
- 기관 내 무료
- 유료
-
Hong Bae Yun,Ye Jin Lee,Myung Sook Kim,Jwa Kyung Sung,Yong Seon Zhang,Sang Min Lee,Suk Chul Kim(김석철),Yong bok Lee 한국토양비료학회 2013 한국토양비료학회지 Vol.46 No.6
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. In this study, we evaluated the tendency of livestock manure production and amount of chemical fertilizer used in Korea from 1990 to 2011. 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. Therefore we need a reasonable strategy for nutrient management such as combination of both manure and chemical fertilizers in near future.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
