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为了提高尼罗罗非鱼(以下简称尼罗鱼)商品规格和养殖尼罗鱼的经济效益,我们进行了一冬龄尼罗鱼与家鱼混养的试验,现将1983年试验结果报告如下:一、材料和方法1.试验池条件。试验池6口,总面积117.2亩,水深2～2.5米。7、8、9三个月分别对各池水的主要理化因子和浮游生物量进行测定,测得的平均值为:水温24～33.5℃,pH6.5～7.2,溶解氧1.4～14.7毫克/升,有机物耗氧量11.99～16.79毫克/升,浮游植物量473.7～2,331.4万个/升,浮游动物量15.3～35.1万个/升。2.试验鱼来源及放养情况。尼罗鱼种由本场越冬温室提供,规格为5～15克,先后于4月30日、5月
In order to improve the Nile tilapia (hereinafter referred to as the Nile fish) commodity specifications and the economic benefits of farming nile, we conducted a winter nile tilapia with domestic fish polyculture test, the 1983 test results are reported as follows : First, materials and methods 1. Test cell conditions. Test pool 6, with a total area of 117.2 acres, depth 2 to 2.5 meters. The main physico-chemical factors and plankton biomass of each pond water were measured at 7, 8, and 9 months respectively. The average values were as follows: water temperature 24-33.5 ℃, pH6.5-7.2, dissolved oxygen 1.4-14.7 mg / , The oxygen consumption of organic matter was 11.99-16.79 mg / L, the amount of phytoplankton was 473.7 ~ 23.314M / L, and the amount of zooplankton was 15.3-35.1 / L. 2. Test fish source and stocking situation. Nile fish species provided by the field overwintering greenhouses, specifications for 5 to 15 grams, successively in April 30, May