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在美国佛罗里达洲中部对绿藻纲植物石莼(Ulva lactuca L)进行室外培养,积累了产生大型藻类有益的资料。在水体交换迅速的(每天交换12个容量)容器中,通过连续的充气使其呈悬浮状态,培养的石莼产量最高。虽然产量与充气次数没有线性关系,但水流或充气次数降低,产量就低。在充气和不充气的两种情况下,最初重量(湿重)为0.8公斤/米~2,每周培养石莼的产量最高。在进行吸收氮的研究中,24小时内石莼不吸收氮素,之后,在介质中分别以 NH_4~+和 NO_3~-补充时,石莼叶状体氮的含量就增加3.6和2.8倍。因此,施肥,即在减少附着生物时来增加氮,可以作为这种藻类的一种养殖方法。
Ulva lactuca L is cultured outdoors in central Florida, United States, accumulating beneficial data for producing large algae. In fast-changing (12 capacity daily exchanges) containers, the highest yield of cultivated kohlrabi is produced by continuous aeration suspending them. Although there is no linear relationship between yield and inflating times, the number of inflows or inflations decreases and the yield is low. In both inflated and non-inflated conditions, the initial weight (wet weight) was 0.8 kg / m ~ 2, with the highest yield of cultivating shrimps per week. During the process of nitrogen uptake, Nostoc can not absorb nitrogen within 24 hours, then the nitrogen content of N. canadensis increased by 3.6 and 2.8 times when it was supplemented with NH 4 + and NO 3 - respectively in the medium. Therefore, fertilization, which is to increase nitrogen when attaching organisms, can be used as a breeding method for such algae.