为调节鱼塘中的氮磷比例，促使氮素得到更好的利用，使浮游生物加快生长和繁殖，可按下述方法给鱼塘施磷。１、撒肥。把磷肥碾成粉末，直接撒入塘中，每１００平方米水面日用量在１５０克以下，每天上午撒施。２、挂袋。把磷肥装入３０毫米×４０毫米的纱布袋，每袋３—５... In order to adjust the proportion of nitrogen and phosphorus in fish ponds and promote the better utilization of nitrogen and make plankton to accelerate growth and reproduction, phosphorus can be applied to the fish ponds as follows. 1, spreading fertilizer. The phosphate fertilizer crushed into powder, directly into the pond, every 100 square meters of water daily consumption of 150 grams or less, every morning spreading. 2, hanging bags. The phosphate fertilizer into 30 mm × 40 mm gauze bag, bag 3-5 ...