2,4-D 是知名的除莠剂,但是一般只知道它可以制成溶液在陆地上喷洒除莠,要让它到水底去除莠,岂不是要把全部池水变成含2,4-D一定浓度的溶液么?这么做首先是是否合算?其次是否对水中其他生物如鱼类有害,这些确乎都成问题。办法是有的:把2,4-D 制成药丸,沉到池底去, 2,4-D is a well-known herbicide, but generally only know that it can be made on the solution sprayed on the soil herbicides, to make it to the bottom to remove ametrine, would not it be all the water into a 2,4-D Is it a question of whether a solution of a certain concentration is cost effective to do this? Second, whether it is harmful to other organisms in the water, such as fish. There are ways: the 2,4-D made of pills, sink to the bottom of the pool,