[Symbiotic effect of cultivating fish in rice field in north China].
Experiment on rice-fish symbiosis in north China showed that the rice production in rice-fish field was a bit higher than control, and the output-input ratio of energy, utilization efficiency of solar energy and soil organic matter content increased 0.08, 0.1 and 0.24%, respectively. The banded sclerotic blight incidence decreased 3.8% and the net economic income increased 900 RMB yuan per hectare. All the resul;ts showed that rice-fish symbiotic system had a good symbiotic effect.
Cao
Z
Z
Institute of Agronomy, Shenyang Agricultural University, Shenyang 110161.
Liang
Z
Z
Zhao
Y
Y
Dong
Y
Y
D000818:Animals; D002681:China; D017753:Ecosystem; D005399:Fishes / Q000502:physiology*; D012275:Oryza / Q000502:physiology*; D013559:Symbiosis / Q000502:physiology*