论文部分内容阅读
中国科学院湖北水生生物研究所自1958年开始了利用固氮蓝藻作为晚稻肥源的研究,现已取得重要成果. 蓝藻是一种特殊的藻类,它本身含有固氮酶和叶绿素,能够把空气中的分子态的氮转化为农作物可吸收的有机氮.在它的生长和繁殖过程中能不断分泌出多种含氮化合物和活性物质.死亡后迅速分解,放出大量氨并增加有机质,因此可以大大提高土壤肥力. 水生生物研究所经过大量分离筛选,纯种培养及有关生物学特性的研究,获得了七种繁殖快、固氮量高、适
Hubei Institute of Hydrobiology, Chinese Academy of Sciences has started to make use of nitrogen-fixing cyanobacteria as a fertilizer for late-crop fertilizers since 1958. Important achievements have been achieved in this field.Algae is a special kind of algae, which itself contains nitrogenase and chlorophyll and can transport molecules in the air The state of nitrogen into organic nitrogen can be absorbed by crops. In its growth and reproduction can continue to secrete a variety of nitrogen-containing compounds and active substances. Rapid decomposition after death, release a large number of ammonia and increase organic matter, it can greatly improve the soil Fertility.After a large number of isolation and screening of aquatic organisms, purebred culture and biological characteristics of the study, obtained seven fast propagation, high nitrogen fixation, suitable