论文部分内容阅读
1.虾池建造罗氏沼虾的生长适温为25~32℃,要求水体溶氧不低于4毫克/升,每2~3亩(1亩=667平方米)水面配备一台叶轮式增氧机;pH值以7.5~8.5为佳;透明度以30~40厘米为宜。底质以壤土或黏土为好。虾池面积以5~10亩为宜,池深2~1.5米,沟深2米以上,池宽40~60米,长宽比为(4~6)1。进、排水方便。
1. Shrimp pond construction Macrobrachium rosenii growth temperature is 25 ~ 32 ℃, requires dissolved oxygen in water body not less than 4 mg / L, every 2 ~ 3 acres (1 mu = 667 square meters) equipped with an impeller surface water increased Oxygen machine; pH value of 7.5 to 8.5 is better; transparency to 30 to 40 cm is appropriate. Substrates to loam or clay as well. Shrimp pond area of 5 to 10 acres is appropriate, the pool depth of 2 to 1.5 meters, more than 2 meters deep groove, the pool width of 40 to 60 meters, aspect ratio (4 ~ 6) 1. Into, easy drainage.