Well done, this chinese government plan! That was seen with many other cultivations, where chemicals use was out of control, to obtain a desaster, at last.
Often, solution was just a requirement of a better training for farmers.
That was a really great article, and I learned a new word "eutrophication".
I have long worried about the sustainability of Chinese fresh water pearl production.. and this article both encouraged me to relax and filled my mind with a thousand new questions. LOVE THAT.
All best to you and thanks again for sharing this!