논문 상세보기
Effect of bio-char application combined with straw residue mulching on soil soluble nutrient loss in sloping arable land KCI 등재
- 언어ENG
- URLhttps://db.koreascholar.com/Article/Detail/357606
We assessed the effects of combining bio-char with straw residue mulching on the loss of soil soluble nutrients and citrus yield in sloping land. The two-year study showed that straw residue mulching (ST) and bio-char application combined with straw residue (ST+BC) can significantly reduce soil soluble nutrient loss when compared with the control treatment (CK). The comparative volume of the soil surface runoff after each of the treatments was as follows: CK > ST > ST + BC. Compared with the CK, the runoff volume of the ST was reduced by 13.6 % and 8.5 % in 2014 and 2015, respectively. Compared with the CK, combining bio-char with the ST application reduced the loss of soluble nitrogen and improved the soil total nitrogen content reaching a significant level in 2015. It dramatically increased the soil organic matter content over the two year period (36.3% in 2014, 50.6% in 2015) as well as the carbon/nitrogen ratio (C/N) (16.6% in 2014 and 39.3% in 2015). Straw mulching combined with bio-char showed a trend for increasing the citrus yield.
1. Introduction
2 Materials and methods
2.1 Site description
2.2 Experimental design
2.3 Sampling and analysis
2.4. Statistical analyses
3. Results and Discussion
3.1 Effects of the different treatments on therunoff volume
3.2 Effect of the different treatments on thesoluble nutrient loss
3.3 Effect of the different treatments on thesoil carbon and nitrogen
3.4 Correlation between the runoff volumeand the runoff nutrient content
3.5 Effect of the different treatments on thecitrus fruit yield and quality
4 Conclusion
References
