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(초록) 10
1. 서언 13
2. 연구사 16
3. 재료 및 방법 20
가. 실험 재료 20
1) 시험포장 20
2) 공시규산비료 21
나. 처리 및 방법 21
1) 규산 및 3요소 처리 21
2) 시험구 배치 및 벼 재배방법 23
다. 시료분석 및 조사 방법 24
1) 토양 및 공시비료 분석 24
2) 토양용액 분석 25
3) 토양미생물 조사 26
4) 식물체 분석 27
라. 생육 및 수량조사 28
1) 생육조사 28
2) 수량조사 28
마. 쌀 품질조사 28
1) 쌀 품위특성 28
2) 쌀의 무기양분 분석 29
3) 밥 맛 관련 화학성분 분석 30
4) 쌀 단백질 분획 조사 31
4. 결과 및 고찰 33
가. 벼 생육단계 별 토양환경에 미치는 규산질비료의 영향 33
1) 토양의 화학적 성질 변화 33
2) 토양용액의 양분함량 변화 45
3)/다. 토양미생물 개체수 51
나. 벼 생육 및 수량에 미치는 규산질비료의 효과 52
1) 벼 생육에 미치는 규산질비료의 영향 52
2) 수량에 미치는 규산질비료의 영향 56
다. 벼 최 상위 엽의 무기양분 함량 및 균형 61
1) 최 상위 완전전개 잎 또는 지엽의 주요 무기양분 함량 62
2) 최 상위 완전전개 잎 또는 지엽의 무기양분 균형 72
3) 볏짚의 화학적 성분 74
라. 쌀의 품질 및 식미요인 조사 75
1) 규산질비료 시용에 의한 쌀 품위 특성 76
2) 밥 맛 관련 화학적 요인 79
3) 쌀 단백질 그룹 특성 85
5. 적요 89
참고문헌 93
(Abstract) 102
감사의 글 104
Table 1. Physicochemical properties of paddy soil before experiment. 20
Table 2. Chemical composition of silicate fertilizer used in this experiment(2002). 21
Table 3. Experimental design for the effect of silicate fertilizer on rice plant and paddy soil. 22
Table 4. The chemical properties of soil amended with silicon and nitrogen fertilizer at each growing stages. 34
Table 5. Changes of Ca2+, Mg2+, and K+ content in soil solution affected by different levels of silicate alone, or combined with nitrogen fertilizer.(이미지참조) 50
Table 6. Seasonal changes in tiller number of rice plant influenced by different levels of silicate alone, or combined with nitrogen fertilizer application. 55
Table 7. Yield components of rice influenced by different levels of silicate alone, or in combination with nitrogen fertilizer. 57
Table 8. Yields of rice grain and straw influenced by different levels of silicate alone, or in combination with nitrogen fertilizer. 59
Table 9. Nutrients content of rice straw influenced by Si and N fertilizer application. 74
Table 10. Characteristics of rice process and brown rice. 77
Table 11. Physical quality parameters of polished rice influenced by different levels of silicate alone, or combined with nitrogen fertilizer. 78
Table 12. Mineral contents of brown rice influenced by different levels of silicate alone, or combined with nitrogen fertilizer. 84
Table 13. Composition of four protein groups of brown influenced by different levels of silicate alone, or combined with nitrogen fertilizer. 86
Table 14. The ratio of four protein groups of brown rice influenced by different levels of silicate alone, or combined with nitrogen fertilizer. 88
Fig. 1. Paddy rice field used in experiment. 23
Fig. 2. Solution access tubes used in the experiment. 24
Fig. 3. Protein extraction procedure from rice seed. 32
Fig. 4-1. Seasonal changes in pH values of paddy soil influenced by different levels of silicate fertilizer. 36
Fig. 4-2. Seasonal changes in pH values of paddy soil influenced by different levels of silicate in combination with nitrogen fertilizer. 36
Fig. 5-1. Seasonal changes in available P2O5 content of paddy soil influenced by different levels of silicate fertilizer.(이미지참조) 38
Fig. 5-2. Seasonal changes in available P2O5 content of paddy soil influenced by different levels of silicate in combination with nitrogen fertilizer application.(이미지참조) 38
Fig. 6-1. Seasonal changes in available SiO₂ content of paddy soil influenced by different levels of silicate fertilizer application. 40
Fig. 6-2. Seasonal changes in available SiO₂ content of paddy soil influenced by different levels of silicate in combination with nitrogen fertilizer application. 40
Fig. 7-1. Seasonal changes in organic matter content of paddy soil influenced by different levels of silicate fertilizer application. 42
Fig. 7-2. Seasonal changes in organic matter content of paddy soil influenced by different levels of silicate in combination with nitrogen fertilizer application. 42
Fig. 8-1. Seasonal changes in exchangeable K/(Ca+Mg) ratio of paddy soil influenced by different levels of silicate fertilizer application. 44
Fig. 8-2. Seasonal changes in exchangeable K/(Ca+Mg) ratio of paddy soil influenced by different levels of silicate in combination with nitrogen fertilizer application. 44
Fig. 9. Seasonal changes of SiO₂ content in soil solution at 30cm soil depth influenced by different levels of silicate alone, or combined with nitrogen fertilizer. 47
Fig. 10. Seasonal changes of NH4+-N content in soil solution at 30 cm soil depth influenced by different levels of silicate alone, or combined with nitrogen fertilizer.(이미지참조) 48
Fig. 11. Seasonal changes of H2PO4- content in soil solution at 30 cm soil depth influenced by different levels of silicate alone, or combined with nitrogen fertilizer.(이미지참조) 49
Fig. 12. The population of soil microorganisms at heading stage in paddy soil influenced by different levels of silicate alone, or in combined with nitrogen fertilizer. 51
Fig. 13. Seasonal changes in rice plant height influenced by different levels of silicate alone, or combined with nitrogen fertilizer application(expt. in 2002). 53
Fig. 14. Seasonal changes in rice plant height influenced by different levels of silicate alone, or combined with nitrogen fertilizer application(expt. in 2003). 54
Fig. 15. Relationships between yield and yield components of rice plant affected by different levels of silicate alone, or in combination with nitrogen fertilizer. 60
Fig. 16-1. Seasonal changes in total nitrogen content of the uppermost leaf(fully expanded) influenced by different levels of silicate fertilizer application. 63
Fig. 16-2. Seasonal changes in total nitrogen content of the uppermost leaf(fully expanded) influenced by different levels of silicate in combination with nitrogen fertilizer application. 63
Fig. 17-1. Seasonal changes in phosphate content of the uppermost leaf(fully expanded) influenced by different levels of silicate fertilizer application. 64
Fig. 17-2. Seasonal changes in phosphate content of the uppermost leaf(fully expanded) influenced by different levels of silicate in combination with nitrogen fertilizer application. 65
Fig. 18-1. Seasonal changes in Ca content of the uppermost leaf(fully expanded) influenced by different levels of silicate fertilizer application. 66
Fig. 18-2. Seasonal changes in Ca content of the uppermost leaf(fully expanded) influenced by different levels of silicate in combination with nitrogen fertilizer application. 66
Fig. 19-1. Seasonal changes in Mg content of the uppermost leaf(fully expanded) influenced by different levels of silicate fertilizer application. 67
Fig. 19-2. Seasonal changes in Mg content of the uppermost leaf(fully expanded) influenced by different levels of silicate in combination with nitrogen fertilizer application. 68
Fig. 20-1. Seasonal changes in K content of the uppermost leaf(fully expanded) influenced by different levels of silicate fertilizer application. 69
Fig. 20-2. Seasonal changes in K content of the uppermost leaf(fully expanded) influenced by different levels of silicate in combination with nitrogen fertilizer application. 69
Fig. 21-1. Seasonal changes in SiO₂content of the uppermost leaf(fully expanded) influenced by different levels of silicate fertilizer application. 71
Fig. 21-2. Seasonal changes in SiO₂content of the uppermost leaf(fully expanded) influenced by different levels of silicate in combination with nitrogen fertilizer application. 71
Fig. 22. Seasonal changes in Mg/K ratio of the uppermost leaf(fully expanded) influenced by different levels of silicate alone, or combined with nitrogen fertilizer. 72
Fig. 23. Seasonal changes in Si/N ratio of the uppermost leaf(fully expanded) influenced by different levels of silicate alone, or combined with nitrogen fertilizer. 73
Fig. 24. Amylose contents of polished rice influenced by different levels of silicate alone, or combined with nitrogen fertilizer. 80
Fig. 25. Protein contents of polished rice influenced by different levels of silicate alone, or combined with nitrogen fertilizer. 81
Fig. 26. Taste value(Toyo) of polished rice influenced by different levels of silicate alone, or combined with nitrogen fertilizer. 82
Fig. 27. The Mg/K ratio of brown rice influenced by different levels of silicate alone, or combined with nitrogen fertilizer. 85
Fig. 28. SDS-PAGE of rice protein. 87
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