挖塘养鱼是农家致富的好门路。怎样才能夺得塘鱼高产呢?根据实践,鱼塘每亩水面增施尿素5.2kg,可增产鳙鱼10.24kg;每亩增施碳铵13.47kg,可增产鳙鱼10.45kg,鲢鱼也获得较大幅度的增产。因为鳙、鲢鱼是靠采食浮游生物为主的一种滤食性鱼类。鱼塘施放化学氮肥,可使浮游生物大量繁殖 Pond pond fish farming is a good way to get rich. How can we win the high yield of the pond fish? According to the practice, the urea water per mu of the pond is increased by 5.2kg urea, which can increase the yield of the anchovy 10.24kg. The amount of ammonium bicarbonate per mu is increased by 13.47kg, More substantial increase in production. Because of 鳙, silver carp is by feeding plankton mainly a filter-feeding fish. Chemical nitrogen fertilizer ponds, can plankton blooms