摘要
[目的]研究3种水稻种植模式对氮、磷流失特征的影响。[方法]比较有机蛙稻、绿色蛙稻和常规种植3种水稻种植模式下稻田的田面水氮、磷含量特征,以及径流、渗漏和流失特征。[结果]3种水稻种植模式下田面水中总氮和总磷含量的变化特征大体是一致的,总氮的平均含量大小顺序为常规种植模式>绿色蛙稻模式>有机蛙稻模式;总磷的平均含量大小顺序为有机蛙稻模式>绿色蛙稻模式>常规种植模式。总氮径流流失负荷大小顺序为绿色蛙稻模式>常规种植模式>有机蛙稻模式,以铵态氮为主;总氮渗漏流失负荷大小顺序为常规种植模式>有机蛙稻模式>绿色蛙稻模式,以硝态氮为主。总磷径流流失负荷大小顺序为有机蛙稻模式>绿色蛙稻模式>常规种植模式,总磷渗透流失负荷大小顺序为有机蛙稻模式>绿色蛙稻模式>常规种植模式,以溶解性磷为主。[结论]有机蛙稻模式和绿色蛙稻模式可以有效控制稻田中氮、磷流失。
[Objective] The research aimed to study the effects of three rice planting patterns on nitrogen and phosphorus loss characteristics.[Method]The characteristics of nitrogen and phosphorus in the paddy fields, as well as runoff, leakage and loss characteristics of rice fields underorganic frog rice, green frog rice and conventional rice planting patterns were compared.[Result]The changes of total nitrogen and total phosphor-us in the surface water of the three rice planting patterns were generally consistent.The order of the average content of total nitrogen was the con-ventional planting pattern〉green frog rice pattern〉organic frog rice pattern;the order of the average content of total phosphorus was organic frogrice pattern 〉 green frog rice pattern 〉 conventional planting pattern.The order of total nitrogen runoff loss load was green frog rice pattern〉con-ventional planting pattern〉organic frog rice pattern, with ammonium nitrogen as the main;the order of total nitrogen leakage loss load was theconventional planting pattern〉organic frog rice pattern〉green frog rice pattern, with nitrate nitrogen as the main.The order of total phosphorusrunoff loss load was organic frog rice pattern〉green frog rice pattern〉conventional planting pattern. The order of total phosphorus leakage loss loadwas organic frog rice pattern〉green frog rice pattern〉conventional planting pattern, with soluble phosphorus as the main.[Conclusion]The organicfrog rice pattern and the green frog rice pattern can effectively control the loss of nitrogen and phosphorus in rice fields.
作者
周仁先
ZHOU Ren-xian(Anhui Baihu Seed Company,Lujiang,Anhui 23150)
出处
《安徽农业科学》
CAS
2018年第22期58-60,80,共4页
Journal of Anhui Agricultural Sciences
关键词
种植模式
氮
磷
流失
径流
渗漏
Planting pattern
Nitrogen
Phosphorus
Loss
Runoff
Leakage
