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体长达到7～8厘米以后的中后期对虾池塘,由于投料量增加,对虾排泄物逐渐积累,加上死亡的藻类,以及残饵、池底有机物的氧化分解等共同影响,使池塘水质、底质、微生物等发生了很大的变化。养虾中后期水环境和对虾的具体变化为:pH值逐渐升高,水色由清绿色、黄绿色变成褐色、茶绿色
The body length of 7 to 8 cm later in the pond shrimp ponds, due to increase the amount of feeding, shrimp waste gradually accumulated, together with the death of algae, as well as bait, the bottom of the organic matter oxidation and decomposition of the common impact of the pond water quality, bottom Quality, microorganisms, etc. have undergone great changes. The specific changes of water environment and shrimp in middle and late shrimp farming are as follows: the pH value gradually increases, the water color changes from clear green to yellow-green to brown,