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为确定猪粪的施用量和施肥次数对混养鱼塘中鱼产量的影响,加拿大淡水研究所和亚太地区研究培训中心合作进行了3年的施肥养鱼试验,每年试验150～200天.发酵猪粪含水分89%,干粪含N0.34%～0.5%,含P_2O_50.23%,施肥率7%～9%,稀释后施入池中.塘中鲢、鳙、鲤、鲫放养比例为52∶10∶14∶24,放养密度6000～7000尾/ha,其中浮游生物食性鱼类占75%.不同施肥量和不同施肥次数对比试验表明:每日施干猪
To determine the impact of pig manure application and the number of fertilization on fish production in the polyculture fish ponds, Canadian Freshwater Institute and the Asia Pacific Regional Research and Training Center conducted a three-year fertilization and fish culture experiment for 150-200 days per year. Pig manure contains 89% of water, dry manure contains N0.34% ~ 0.5%, containing P_2O_50.23%, fertilization rate of 7% ~ 9%, diluted into the pool in the pond silver carp, bream, carp, crucian carp stocking ratio For 52:10:14:24, the stocking density of 6000 ~ 7000 / ha, of which plankton feeding fish accounted for 75% .Fertilizer different fertilization times and the number of contrast test showed that: daily application of dry pigs