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目前普遍反映氮素化肥用量日益增加,但利用率低,肥效损失严重,影响农业生产。据研究认为利用率所以不高的原因,主要是土壤中存在有一种亚硝酸细菌,能使肥料中的NH_4~+氧化为亚硝酸,而亚硝酸易被土壤中硝酸细菌继续氧化成NO_3~-,不能被带负电的土壤胶体吸附,容易被水淋失;或经过还原后成为气态氮散发到空中去。随着农业生产的发展,迫切需要解决如何经济合理使用氮素化肥问题。一九七九年春季省召开双氰胺氮肥增效剂在农业上应用的会议,组织研究在氮肥中加入一定比例的增效剂,来抑制土壤中亚硝酸细菌的生长和活动,以避免NH_4~+的转化和流失,提高利用率。我所接受了这项试验任务,对双氰胺增效剂在小麦、水稻上的应用进行了研究。
Now generally reflect the increasing use of nitrogen fertilizer, but the utilization rate is low, serious loss of fertilizer, affecting agricultural production. According to the research, the reason why the utilization rate is not high is that there is a nitrite bacterium in the soil that can oxidize the NH_4 ~ + in the fertilizer to nitrite, while the nitrite is easily oxidized by the nitric acid bacteria in the soil into NO_3 ~ , Can not be negatively charged adsorption of soil colloids, easily leached by water; or after the reduction of gaseous nitrogen into the air to go. With the development of agricultural production, there is an urgent need to solve the problem of how to use nitrogenous fertilizer economically and rationally. In the spring of 1979, a conference on the application of dicyandiamide nitrogen synergist in agriculture was held in the spring of the People’s Republic of China. In the study, a proportion of synergist was added to nitrogenous fertilizer to inhibit the growth and activity of nitrite bacteria in soil so as to avoid NH 4 ~ + Conversion and loss, improve utilization. I accepted this pilot mission to study the use of dicyandiamide synergists in wheat and rice.