摘要
在精养虾池中,由于放养密度大,投饵量多,饵料浸出物、残剩的饵料及虾体排泄物也多,会污染池水,直接影响对虾的摄食与生长,严重的还会造成对虾的死亡。因此,在对虾的养成过程中,调节水质是相当重要的环节。
As aerating equipments for fresh water fisn culture may not be suited for marine fish farming, model R170F diesel engine fitted with model 3B-19D pump, according to the author's praetioe, was selected to aerate in prawn pond during air-hunger time and feeding time. while showing dvantage in raising both survival rate and growth rate, this practice has presented higher economic benefit, with an iucreasing of profit per mu by 70%—156% compared to the practice without aeration.