Effects of the integration of mixed-cropping and rice-duck co-culture on rice yield and soil nutrients in southern China.
J Sci Food Agric
; 100(1): 277-286, 2020 Jan 15.
Article
en En
| MEDLINE
| ID: mdl-31523836
ABSTRACT
BACKGROUND:
Biodiversity-based agricultural systems can improve production efficiency and sustainability, with fewer negative environmental impacts and lower use of external inputs. Mixed-cropping and rice-duck co-culture have been shown to produce ecological benefits and to have positive effects on paddy soil. However, the effects of a combination of mixed cropping with different rice cultivars and duck co-culture on soil nutrients availability and grain yields have not been evaluated. A paddy field experiment was carried out over two rice growing seasons to test these effects.RESULTS:
Several combinations of rice cultivars, when integrated with duck co-culture, significantly increased the soil organic matter and total nitrogen contents during the rice growing seasons, as compared to mono-cropping systems. In mixed-cropping combined with duck co-culture (MCDC) systems, the soil alkali-hydrolyzable nitrogen content ranged from 4.33% to 17.86% higher than that in mono-cropping systems. Similar increases were found for soil available phosphorus (8.71-15.91%) and soil available potassium (8.65-39.43%) contents. Furthermore, MCDC produced higher grain yields and harvest indexes for both study seasons.CONCLUSION:
The integration of MCDC systems had positive effects on soil nutrient contents of paddy fields, which could, in turn, lead to yield enhancements, as well as additional income for farmers in the form of organic duck meat. © 2019 Society of Chemical Industry.Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Oryza
/
Suelo
/
Patos
/
Producción de Cultivos
Tipo de estudio:
Evaluation_studies
Límite:
Animals
País/Región como asunto:
Asia
Idioma:
En
Revista:
J Sci Food Agric
Año:
2020
Tipo del documento:
Article
País de afiliación:
China