池塘常见的植物性敌害有:(1)湖靛,又叫臭绿砂,铜锈水,是在夏秋静止的肥水池塘水面上漂浮着翠绿色的蓝藻,是浮游植物中蓝藻门中的微囊藻属植物,它外裹胶膜,鱼吃了不能消化。它死亡后体内蛋白质分解,产生有毒的羟胺和硫化氢,能毒死鱼类。(2)青泥苔,是一些丝状绿藻的总称,似罗网悬张在水中,衰老时呈黄绿色棉絮状漂浮在水面,它能吸收养分使池塘水变瘦,影响鱼类所需的浮游生物的繁殖,鱼苗钻入其中被缠裹而死亡。(3)水网藻,是绿藻中的一种,集结象网袋,危害性比青泥苔更严重。(4)甲藻,常见的有裸 Pond common plant predators are: (1) Lake indigo, also known as stinky green sand, copper rust water, is suspended in the summer and fall of fat water pond surface emerald green cyanobacteria, phytoplankton cyanobacteria door microcapsules Algae, it is covered with plastic film, fish can not digest. After it dies, the protein in the body breaks down, producing toxic hydroxylamine and hydrogen sulfide, which can poison fish. (2) green mud moss, is a general term for some filamentous green algae, like the net suspended in the water, the yellow-green cotton-like floating in the water when it floats, it can absorb nutrients to make the pond water thin, affecting the fish required Plankton breeding, fry drill which was entangled and died. (3) Hydrilla algae, a species of green algae, gather like a net bag, more harmful than the green mud. (4) dinoflagellates, common naked