高温期间已到了养虾池的中后期管理,此时虾体生长快,投饵数量增多,水体中每天承受着大量生物尸体、残饵、对虾排泄物及各种病原生物的沉积,加上浮游生物的代谢分解,致使池底环境严重恶化,氨氮、亚硝酸盐、硫化氢等有毒物质浓度升高,甚至严重超标,影响虾的正常生长,造成虾对病害 High temperature period has reached the shrimp ponds in the late management, this time the shrimp body grow fast, increasing the number of bait, the water daily bear a large number of biological cadaver, bait, shrimp excrement and a variety of pathogen deposition, plus planktonic Metabolism of biological decomposition, resulting in a serious deterioration of the bottom environment, ammonia nitrogen, nitrite, hydrogen sulfide and other toxic substances increased, or even seriously exceeded, affecting the normal growth of shrimp, causing shrimp on the disease