표제지
목차
I. 서론 8
II. 연구사 11
III. 재료 및 방법 15
1. 시험방법 15
2. 분석방법 15
IV. 결과 및 고찰 18
1. 공시재료 및 토양 화학적 특성 18
2. 시용구간에 따른 토양 화학적 변화 20
1) pH 및 EC 20
2) 토양수분과 총탄소함량 23
3) 총질소 및 유효인산 26
4) 치환성석회 및 암모니아태 질소 29
5) 아질산태 및 질산태질소 32
3. 굴 패각 영향에 따른 시험토양의 무기태질소함량 변화 35
4. 고추 생육 및 수량조사 36
5. 굴 패각분말 시용량과 토양에 화학적 조성의 상호관계 38
V. 결론 41
VI. 참고문헌 42
Abstract 44
감사의 글 46
Table 1. Chemical properties of oyster shell powder for experiment 18
Table 2. Chemical properties of soil used for experiment 18
Table 3. Change of inorganic nitrogen and carbon-nitrogen ratio in test soils according to oyster shell powder application at pepper harvest 36
Table 4. Growth and yield of pepper at harvest. (Sep. 26) 37
Table 5. Regression between application content of oyster shell powder and test soils chemical properties 40
Table 6. Correlation coefficients(r) among chemical properties in test soils by oyster shell powder application (n=80) 40
Fig. 1. Change of pH in experiment soils according to application content of oyster shell powder during pepper cultivation. 22
Fig. 2. Change of EC in experiment soils according to application content of oyster shell powder during pepper cultivation. 22
Fig. 3. Change of moisture in experiment soils according to application content of oyster shell powder during pepper cultivation. 25
Fig. 4. Change of total carbon in experiment soils according to application content of oyster shell powder during pepper cultivation. 25
Fig. 5. Change of total nitrogen in experiment soils according to application content of oyster shell powder during pepper cultivation. 28
Fig. 6. Change of available phosphate in experiment soils according to application content of oyster shell powder during pepper cultivation 28
Fig. 7. Change of exchange calcium in experiment soils according to application content of oyster shell powder during pepper cultivation. 31
Fig. 8. Change of ammonium nitrogen in experiment soils according to application content of oyster shell powder during pepper cultivation 31
Fig. 9. Change of nitrite nitrogen in experiment soils according to application content of oyster shell powder during pepper cultivation. 34
Fig. 10. Change of nitrate nitrogen in experiment soils according to application content of oyster shell powder during pepper cultivation. 34