Thank you for the responses and the additional information, Li.

As I found the paper very interesting and feel that I can learn from your
work, I have read the paper carefully. So I hope you do not make the
assumption that my questions are for negative criticism.

you wrote:
>The stocking density were 85 kg/mu and 167.3 kg/mu, respectively.
>I think the figures were correct.

accepting the above figures as stocking density and that the standard way
to present fish yield is by water surface area, I am trying to get some
input/output figures for the fish yield from the two ponds in your work at Guquan Village.

>Table 2, deduct the stocking weight from the gross weight, and
>then we get the net weight.

The numbers in Table 2 have errors. Kindly check.
(a) Gross weight (kg/mu) of fish harvest from manure pond and slurry pond are correct.
(b) Stocking weight (kg/mu) are wrong or missing.
(c) Net weight of fish harvest from manure pond would be 227.5 minus 126.3
cannot give 1,394 kg of fish. So somewhere in the Table, the numbers are wrong.

Could you please provide a new version of Table 2.

regards
Jacky
Unesco Microbial Resources Centre, Stockholm