一、前言海带是食用经济海藻,含有丰富的碘质和营养物质,在医药和工业上用途很大,同时又是我国广大人民所喜爱的副食品.新中国成立以来,我国的海带养殖事业,在当和人民政府正确领导下,有了显著的发展,曾在大连、青岛、烟台等地成立水产养殖场进行大量的人工养殖.由于我国幅员辽阔,沿海水温相差较大,同时我国现在所养殖的海带(Laminaria japonica Aresch),原生亚寒带,仅适于低温地区养殖.因为我国可以生产的地区,目前仍局限于北方少数沿海肥沃区域,所以它的产量,还不能满足我国人民的需要,每年还得由国外大量进口.我们为了加速社会主义建设,创造更多的财富,增加副食品的供应.必须更快地发展海带生产.因此当前除了充分利用北方原有肥沃区提高单位产量,在贫瘠区利用人工施肥养殖外,更 I. Introduction Laminaria is a kind of edible economic seaweed that is rich in iodine and nutrients and has great uses in medicine and industry and at the same time is a favorite food for the majority of people in our country.Since the founding of New China, Under the correct leadership of the People’s Government and under the leadership of the People’s Government, remarkable progress has been made in the establishment of aquaculture farms in Dalian, Qingdao and Yantai for a large number of artificial aquaculture. Due to the vastness of our country and the large differences in coastal water temperature, (Laminaria japonica Aresch), native sub-tropical zone, is only suitable for breeding in low-temperature areas, because the areas that our country can produce are still confined to a few coastal fertile areas in northern China so its production can not meet the needs of our people. Have to be imported in large quantities from abroad .In order to speed up the construction of socialism, create more wealth and increase the supply of non-staple food, it is necessary to develop kelp production more rapidly. Therefore, at present, in addition to making full use of the fertile land in the north to increase unit output, District use of artificial fertilization breeding, but also