Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
권호 표지

Experiments of Rice Cultivation for Establishment of Total Nitrogen(T-N) Item of Agricultural Water Standards

농업용수 수질기준 T-N 항목 설정을 위한 벼생육 실험

  • 최선화 (농업기반공사 농어촌연구원) ;
  • 김호일 (농업기반공사 농어촌연구원) ;
  • 윤경섭 (농업기반공사 농어촌연구원) ;
  • 최이송 (경희대학교 환경응용화학부) ;
  • 오종민 (경희대학교 환경응용화학부)
  • Received : 2004.03.26
  • Accepted : 2004.05.06
  • Published : 2004.05.30
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Abstract

The present water quality standards for agricultural were established without considering the effects of water quality on the safety, growth, yield and quality of crops. This study was carried out to investigate the effects of irrigation water quality on the growth, yield, and grain quality of rice, and to acquire basic knowledges to set up water quality standards for irrigation. The field and pot experiments were conducted with irrigation water that was previously adjusted four concentrations (control, 5, 10, 20 mg/L) and six concentrations (control, 5, 10, 15, 20, 30 mg/L) by $NH_4NO_3$ solution and replicated three and four times with randomized block design, respectively. The results of this study showed that the inorganic nutrient of rice plant, rice protein contents and number of panicle tended to increase as the T-N concentration in irrigation water was increased. In addition, grain yield at T-N 10 mg/L and 20mg/L were significantly higher than the control at the field experiment. From the pot experiment at T-N 30 mg/L, the percentage of head rice was slightly lower due to the increase of green kernel and white belly/core kernel.

Keywords

References

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