Ninghua

In Ninghua, water levels in the fields used for rice-fish cultivation varied from 3 to 10 cm, and no water remained in the field after the field was drained field and the crop matured.

Chapter 6 1995

In 1985, in Ninghua, Yongan, 133.3 ha of ricefields stocked with fish produced 720 kg/ha with the addition of some fertilizer and weeds.

Chapter 6 1995

Soil tests in Ninghua in 1984 demonstrated that rice-fish cultivation increased organic matter by 0.09%, total nitrogen by 0.04%, total phosphorus by 0.38%, available nitrogen by 22 ppm, and available phosphorus by 2 ppm compared with the control field.

Chapter 6 1995

In Ninghua, weeds in the late-crop field stocked with fish decreased 4425 kg/ha compared with the control field.

Chapter 6 1995

Studies in Ninghua showed that the biomass of benthos can reach 109.3 kg/ha.

Chapter 6 1995

In Ninghua, two seasons of rice blossoms amounted to 1559 kg/ha.

Chapter 6 1995

Experiments during the late season in Ninghua showed that in ricefields stocked with fish, weed weight averaged 161.7 g/m³, compared with 604 g/m³ in the control field.

Chapter 6 1995

In 1984 in Ninghua, the height of the rice increased by 2%, effective rice ears by 14%, number of grains by 9%, rate of fruit bearing by 2%, weight of 1000 grains by 4%, and yield by 7.1% in the field used for rice-fish culture.

Chapter 6 1995

In Ninghua, experiments indicated that in 1 ha of ricefield there was 48 210 kg of roots,

Chapter 6 1995

Investigation in Ninghua indicated that there were 25 families and 433 species of vascular plants in the ricefields.

Chapter 6 1995