一、底质与产量的关系。唐海县约70％的虾池为全泥质,这种土质保水性能好,表层营养丰富,有利于水生生物的生长。但是,这种底质的老池子因为搞集约化精养,常年累月会积累大量的沉积物,使池内有机物含量丰富,藻类过快繁殖,它们不仅与对虾争氧,还会排出有害物质。如果这个时期换水不及时,池底会产生大量硫化物,这些硫化物很容易与泥土结合,很快渗入到池内泥土 First, the relationship between sediment and yield. About 70% of shrimp ponds in Tanghai are all muddy. This kind of soil has good water-holding properties and rich surface nutrients, which are good for the growth of aquatic organisms. However, due to intensified intensive cultivation, the old pond of this sediment accumulates a large amount of sediments all the year round, enriching the organic matter in the pond and overproducing algae. They not only emit oxygen but also emit harmful substances to shrimp. If this period is not timely replacement of water, the bottom will produce a lot of sulfide, these sulfides are easy to combine with the soil, and soon infiltrated the pool of soil