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1、氮肥的使用方法 氮肥是一种速效肥料,宜作追肥使用,由于水质的具体情况不相同,养殖水以表层水中有效氮浓度不超过0.3毫克/升为宜。氮肥施入水中后,如果产生过多的氨态氮(NH_3)时,就会对鱼类产生严重危害,是水体老化的重要因素,对养殖极为不利。碱性水体高温时应避免追施氮肥。2、磷肥的使用方法 磷肥对于绝大多数养殖水体都是十分必要的。选用磷肥应以水溶性磷为宜,这样可以在较短的时间内提高
1, the use of nitrogen fertilizer Nitrogen is a quick-acting fertilizer, should be used for topdressing, due to the specific conditions of water quality is not the same, aquaculture water to the surface water of effective nitrogen concentration does not exceed 0.3 mg / L is appropriate. Nitrogen fertilizer into the water, if too much ammonia nitrogen (NH_3), it will have a serious fish hazard, is an important factor in the aging of water, farming is extremely detrimental. Alkaline water should avoid topdressing nitrogen fertilizer at high temperature. 2, the use of phosphate fertilizer P for the vast majority of aquaculture water are very necessary. Selection of phosphate fertilizer should be water-soluble phosphorus is appropriate, this can be increased in a short period of time