Spring Pond Fertilizer Countermeasures
In the fertilizer and water work after disinfection of ponds in the ponds every year, the effect of fertilizer and water is poor. This not only raises the cost of pond culture, but also wastes the labor. It also affects the progress of the pond's next production. The difficulties and countermeasures for spring fertilizer work are analyzed as follows. First, the aquaculture water body lacks nutrition and lacks various nutrients needed for algae growth. It is easy for these problems to occur in Xintang, ponds that do not use basal fertilizer, and ponds that use very thin water sources. At this time, the basal fertilizer should be topdressed in time or biological agents that are beneficial to the growth of algae should be used to produce fertilizer and water to cultivate planktonic algae. Secondly, during the clear pond process, excessive or excessive disinfectant was used, resulting in a slower process of fertilizer and water. At the same time, the newly-excavated paddy field cultivation is difficult to use due to the annual use of pesticides. The reason is that more toxic residues of drugs are not conducive to the growth and reproduction of algae. At this point, detoxification biological agents should be used first, together with anti-stress drugs, to eliminate toxicity and promote algal reproduction. Third, the moss in the bottom of the pond will also inhibit the reproduction of planktonic algae. The method is to increase the water level in the pond, remove it artificially, and use the modified biological preparation, and then top-dressing. Fourth, the continued emergence of a large number of zooplankton is also another important factor affecting the growth of algae.
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