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The effect of geo-engineering materials of chitosan modified local soil (MLS) on nutrient limitation was studied in comparable whole ponds in Lake Taihu in October 2013. After 20 kg MLS were sprayed in the whole water pond (400 m2), the chlorophyll-a (Chl-a) concentration was decreased from 42 to 18 μg L−1 within 2 h and remained below 20 μg L−1 in the following 15 months, while the average Chl-a...
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