一、环境条件场地应选择避风向阳,排灌方便,生态环境良好,水源有保证,并符合GB/T18407.4《农产品安全质量 无公害水产品产地环境要求》。水源水质要符合GB11607《渔业水质标准》,养殖池塘水质要符合NY5050《无公害食品 淡水养殖用水水质》,池水透明度保持在20厘米以上。池塘要 First, the environmental conditions Venues should choose sheltered from the sun, irrigation and drainage facilities, good ecological environment, water sources are guaranteed, and in line with GB / T18407.4 “environmental quality of aquatic products origin of pollution-free aquatic products.” Water quality should be consistent with GB11607 “Fishery water quality standards,” pond water quality to meet NY5050 “pollution-free food freshwater aquaculture water quality”, water transparency remained at 20 cm above. Pond to