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青虾与河蟹混养,可充分利用池塘水体和饲料,大大提高池塘养殖的整体经济效益。 1.池塘准备实行虾蟹混养的池塘,面积以5～10亩(1亩 =667平方米,下同)为宜,水深1～1.5米,塘埂坡度1:3左右,要求不渗不漏,排灌方便,水源充足,水质清新,溶氧丰富,无工业或生活污水污染。养殖塘应清除过多淤泥,冬季经阳光曝晒,放养前0.5～1个月,每亩用生石灰75～100千克化浆或漂白粉20毫克/千克全池泼洒清塘消毒,以杀灭野杂鱼,改善池塘底质。池塘四周应有防逃设施,一般用高0.5米的铝质或塑料板插入土中0.2米圈围,也可用塑料薄膜圈围。防逃设施内留1米以上的坡埂,以方便饲养管理,并有
Freshwater shrimp and crab polyculture can make full use of pond water and feed, greatly improving the overall economic benefits of pond culture. Pond preparation Prawn and crab polyculture ponds, an area of 5 to 10 acres (1 mu = 667 square meters, the same below) is appropriate, the water depth of 1 to 1.5 meters, ponds slope gradient of about 1: 3, no seepage does not require Leakage, drainage and irrigation convenience, adequate water, fresh water, rich dissolved oxygen, no industrial or domestic sewage pollution. Aquaculture ponds should be removed too much mud, the sun exposure in winter, stocking 0.5 to 1 month, 75 to 100 kg per acre with quicklime or bleach 20 mg / kg Quanchiposa Qing Tong disinfection to kill wild trash , Improve the pond sediment. There should be anti-dumping facilities around the pond, generally 0.5 meters high with aluminum or plastic plate into the soil around the 0.2-meter circle, plastic film can also be used around the circle. Anti-escaping facilities to stay more than 1 meter slope, in order to facilitate feeding and management, and there