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一、清除池底淤泥淤泥的主要成分是残饵、有机肥、死亡的生物机体和生物排泄物。过多的淤泥在夏秋季节易引发水质恶化,还会产生大量的有机酸、硫化氢和氨等,使池水pH值下降,抑制和危害河蟹的生长和生存。特别是有害的病菌、寄生虫等致病微生物存在淤泥中,一旦条件适宜,各种病源即泛滥成灾。因此,必须利用冬季蟹池空闲期,将池水抽干,用机械或人工将池底淤泥全部清除。
First, remove the bottom sediment sludge is the main component of bait, organic fertilizer, dead organisms and biological waste. Excessive sludge can easily lead to deterioration of water quality in summer and autumn, and will also produce large amounts of organic acids, hydrogen sulfide and ammonia, which will decrease the pH value of the water and inhibit and endanger the growth and survival of crabs. Especially harmful bacteria, parasites and other pathogenic microorganisms exist in the sludge, once the conditions are right, a variety of diseases that flooding disaster. Therefore, it is necessary to make use of the idle period of the winter crab pool to drain the pool water and completely remove the bottom silt by mechanical or manual methods.