水產(chǎn)養(yǎng)殖水質(zhì)調(diào)控ppt課件-閱讀頁
2025-02-02 16:13本頁面
【正文】 Regulation of Water Fertility水體肥度調(diào)控 The fertility of breeding water mainly depends on the quantity of phytoplankton。 (2)phytoplankton has been intaken by zoonplankton. Water control: Add fertilizer(Organic or nonanic) or nutritional salt (nitrogen and phosphorus) letting fertile water bee old肥水不老 In old water phytoplankton over multiply. And the water is lack of nutritive salt and light so photosynthesis cannot work properly. Old water is the water in which phytoplankton cell bees old. Water control: At around 10 am of sunny day, use （ 1PPM） CuSO4 to kill green algae. At around 5 pm, drain half of the pond and refill with new water. 3. Old bees good老水轉(zhuǎn)好 Good water must be fertile water, which means that there are sufficient phytoplankton as primary producer to be eaten by raised animals and bait animals, in the meantime, they can offer oxygen to water. But fertile water doesn’t equal to good water. Water control: When color turns dark green (with 25cm of transparency ), replace 1/3 of water in pond. Discussion ?Methods of water quality control. Thank your listenin
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