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1、本科毕业论文 题 目稻鸭共育对稻田水体磷素动态及组分的影响Rice-duck farming on paddy field water dynamics and composition of phosphorus姓 名王 明 辉学 号9专 业农 学指导教师汪 金 平职 称副 教 授中国二一二 年 三 月分类号 密级华中农业大学本科毕业论文稻鸭共育对稻田水体磷素动态及组分的影响Rice-duck farming on paddy field water dynamics and composition of phosphorus学生：王明辉学生学号：9学生专业：农学指导教师：汪金平 副教授 华中
2、农业大学植物科学与技术学院二O一二年三月目录摘要.II关键词. .IIAbstract.IIIKey words.III1前言.11.1稻鸭共育的概述.11.1.1稻鸭共育的研究进展.11.1.2稻鸭共育的定义与作用.11.1.3稻鸭共育目前存在的问题.21.2稻田水体磷素动态及组分的研究综述.41.2.1稻田水体磷素的存在状态.41.2.2稻田水体磷素的循环与转化.41.2.3稻田水体磷素的损失途径.51.2.4稻田水体磷素循环研究.51.3 本研究的目的.62材料与方法.62.1试验地点与材料.62.2试验处理与田间设计.72.3样品采集与分析.83结果与分析.83.1稻田水体磷素动态.9
3、3.2稻田渗透水磷素动态.113.3稻鸭共育水体磷素的输入输出平衡的分析.124讨论与分析.134.1稻田水体磷素动态影响.134.2稻田渗透水磷素动态影响.144.3稻鸭共育对稻田水体磷平衡的影响.145展望.15参考文献.16致.18摘要稻鸭共育是运用农业生态学原理，以水稻田为基础生产无公害稻米和成品鸭为核心的一项优质、高效、环保农业技术, 因具有降低水稻种植和养鸭成本，提高大米和鸭产品品质，减少农药、化肥、抗生素使用带来的环境污染等优点而在我国迅速发展。本研究以稻鸭生态系统为研究对象，以四个不同放鸭数量处理及对照组共五个处理来研究了稻鸭共育水体P的组分及动态变化规律。结果表明：施P后稻田
4、水体P含量立即达到最大值，一周后迅速降低。相对于空白(CK)，养鸭处理稻田水体总P浓度、有效P浓度均显著增加。稻田渗透水水体P素变化趋势同田面水总体相同。该结果对稻鸭共育技术规能提供了理论基础，并对稻鸭共育生态系统如何使用磷肥，减少面源污染提供了理论依据。关键词稻鸭共育生态系统；田面水；渗透水；有效P；总P；面源污染AbstractUsing the principles of agricultural ecology and based on rice fields, rice-duck farming is a high quality, efficient and environment
5、ally friendly agricultural techniques, which takes nuisance-less rice and duck as core products. It develops at a high speed in china owing to the advantages of reducing costs of rice cultivation and duck raising, improving quality of rice and duck products as well as reducing pollution caused by th
6、e use of pesticide, fertilizer and antibiotic relative to practical fundamental.Taking rice-duck ecosystem as study object, this research studies water phosphorus dynamic changes of the component by five treatments in clouding four different numbers of ducks and contrast group. The results indicate
7、that water phosphorus in rice fields is up to maximum immediately after addition of phosphorus, and decrease rapidly in one week. In contrast to the CK, water phosphorus density and effective density of phosphorus increase remarkably of the rice fields for feeding duck. and the changing trend of inf
8、iltration water is the same with water on fields surface.This result supplies theoretical basis on the rick-duck farming technical specifications and offers theoretical basis for the rice-duck farming ecosystem on how to use fertilizer and reduce non-point source pollution.Key wordsecosystem nurtured by rice and duck; water on fields surface; osmotic water; effective phosphorus volume; total phosphorus volume; non-point source pollutio
