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澳洲淡水龙虾又名红螯虾,是热带地区的大型虾种。1.建池虾池面积以3～5亩(1亩=667平方米)为宜,底部为砂石或硬质土,并用砖块、瓦铄、网片、竹排等设置人工巢穴。池中要放养一定数量的水生植物,如水浮莲等。进、排水口均需设置防逃网,池塘四周用竹片等围起高30厘米的防逃墙。2.水质条件龙虾的适宜生长温度为20～33℃,低于12℃即停止生长,低于10℃停止摄食。要求池水 pH 值7～8,溶解氧每立方米大于4克,水的硬度大于5×10~(-6)。虾池要经常换水,每次换水1/5～1/3。严防水质受工业废水和农药污染。3.养殖密度单养时,每亩放养2厘米长的幼虾6000～8000尾,或3厘米长的幼虾4000～6000尾;混养时每亩放养幼虾2000～3000尾。如采用捕大留小的轮捕法,放养密度可适当增加。另外,每亩可放养
Australian freshwater lobster, also known as red crawfish, is a large shrimp species in the tropics. 1. The pond pool area of 3 to 5 acres (1 mu = 667 square meters) is appropriate, the bottom of the gravel or hard soil, and brick, tile, mesh, bamboo row set artificial nest. Pool to stocking a certain number of aquatic plants, such as water lettuce and so on. Into, drainage are required to set anti-escape network, around the pond surrounded by bamboo and other high 30 cm anti-evading wall. 2. Water quality lobster suitable growth temperature of 20 ~ 33 ℃, less than 12 ℃ to stop growing, less than 10 ℃ to stop feeding. Requires water pH 7 ~ 8, dissolved oxygen per cubic meter greater than 4 grams, water hardness greater than 5 × 10 ~ (-6). Shrimp ponds often change the water, changing the water every 1/5 ~ 1/3. Prevent water pollution by industrial wastewater and pesticides. 3. Aquaculture density of monoculture, per acre stocking 2 cm long juvenile 6000 ~ 8000, or 3 cm long juvenile shrimp 4000 ~ 6000; polyculture at 2000 mu per 3000 mu shrimp. Such as the use of catching the small round catch method, stocking density may be appropriate to increase. In addition, can be stocked per acre