文档介绍：东华理工大学
EAST CHINA INSTITUTE OF TECHNOLOGY 
生物化学课程设计
题目:磷影响尿素氮转化过程的生物化学研究
学院:
专业:
班级:
姓名:
学号:
时间:
摘要
尿素是世界农业领域中使用最广泛的氮肥,氮肥在我国农业生产中发挥了重要作用,但氮肥的不合理施用也带来了一些负面影响,氮肥施用不合理、利用率低,不仅导致氮素的大量损失,造成了浪费,而且还对生态环境产生不良影响,使农田氮素成为重要的污染源之一。氮磷交互作用,历来是植物营养科学和肥料科学研究的重点和热点。不同国内外研究结果表明,磷对降低氨挥发和提高氮素利用率上有一定作用。目前,关于氮磷、氮磷钾配施,对作物生长、养分吸收和土壤养分有效性影响的报告已有不少,但是研究磷肥与尿素的混合施用对氮素转化生物化学过程的影响还很少。然而到目前为止,缺乏磷在不同含水量的土壤中对尿素氮转化影响的研究,所以我们重点讨论不同含水量条件下磷对尿素氮转化影响的生物化学过程。对提高氮肥利用率,减少氮肥损失,保护人类的生存环境等都具有重要的意义。
关键字:氮磷,氮素转化,含水量,生物过程,化学过程。
In this paper
Urea is the most widely used in the area of the world's agricultural nitrogen fertilizer, nitrogen fertilizer played an important role in agricultural production in our country, but the unreasonable application of nitrogen fertilizer has brought some negative influence, is not reasonable, low utilization rate of nitrogen, not only lead to a large number of nitrogen loss, caused the waste, but also bad influence on ecological environment, make the farmland nitrogen e one of the important pollution sources. Nitrogen and phosphorus interaction, has always been a focus in the study of plant nutrition and fertilizer science and hot spots. Different domestic and foreign research results showed that the phosphorus to reduce ammonia volatilization and raise the utilization ratio of nitrogen have some effect. At present, about nitrogen and phosphorus, NPK with, on crop growth, nutrient uptake and soil nutrient availability report has quite a few, but the study and the mixture of urea phosphate fertilization effect on nitrogen transformation process biochemistry were rare. So far, however, the lack of phosphorus in different water content of the study of the impact on the transformation of urea nitrogen in the soil, so we focus on different water content under the condition of phosphorus effect on urea nitrogen transformation of biochemical process. To improve the utilization rate of nitrogen fertilizer, reducing nitrogen loss, protect human survival env