| 大连复州河流域玉米土壤硝态氮动态变化及合理施肥调控 |
| |
| 引用本文： | 刘智强,王志军,徐铭毅.大连复州河流域玉米土壤硝态氮动态变化及合理施肥调控[J].河南农业科学,2013,42(2). |
| |
| 作者姓名： | 刘智强 王志军 徐铭毅 |
| |
| 作者单位： | 大连市农业科学研究院,辽宁大连,116036 |
| |
| 基金项目： | 农业部农业公益性行业科研专项经费项目 |
| |
| 摘 要： | 为了提高氮肥利用率和减少环境污染,通过不同施氮处理,研究了大连复州河流域棕壤土大田玉米土壤硝态氮的动态运移,并讨论了玉米氮肥经济环保施用方法。结果表明,除缓控释肥处理外,各处理各土层NO3--N在植株不同生育期向土层上、下2个方向动态运移,前期上移,后期下移。与习惯施肥处理相比,优化施肥足以满足植物需求,但下层养分仍有一定量的积累。与优化施肥处理相比,有机肥+化肥处理使养分缓慢释放,减缓了土壤NO3--N向下迁移的速度,减少了养分的损失,使养分供应与吸收达到动态平衡;缓控释肥处理使养分持续有效地供应,最大程度地避免了氮肥的向下迁移,减少淋溶、降低环境污染,同时使玉米产量提高。因此,建议使用氮肥缓释剂对作物进行减氮施肥。
|
| 关 键 词： | 大连复州河 棕壤土 土壤硝态氮 合理施肥 |
Dynamic Variations of Nitrate Nitrogen in Maize Field Soil of Fuzhou River Basin in Dalian and Its Rational Fertilization Controlling |
| |
| LIU Zhi-qiang
,
WANG Zhi-jun
,
XU Ming-yi.Dynamic Variations of Nitrate Nitrogen in Maize Field Soil of Fuzhou River Basin in Dalian and Its Rational Fertilization Controlling[J].Journal of Henan Agricultural Sciences,2013,42(2). |
| |
| Authors: | LIU Zhi-qiang WANG Zhi-jun XU Ming-yi |
| |
| Abstract: | In order to improve the utilization rate of nitrogenous fertilizer and reduce the environment pollution,the dynamics migration of nitrate nitrogen(NO-3-N) in soil of maize field on brown soil of Fuzhou river basin in Dalian was studied and the rational fertilization controlling was discussed by designing of different kinds of nitrogen application methods.The results showed that the NO-3-N of soil could be regulated in different plant growth period.The NO-3-N moved upward in the early growth period and it moved downward in the late growth period.Organic fertilizer treatment slowly released the nutrient,slowed down the speed of migration of soil NO-3-N,reduced nutrient loss,and the nutrient supply and absorption could achieve dynamic balance.The use of controlled release fertilizer reduced nitrogen dissolution and downward migration,and improved maize yield.So,use of controlled release nitrogen is suggested to reduce application of nitrogen fertilizer. |
| |
| Keywords: | Fuzhou river in Dalian brown soil soil nitrate nitrogen rational fertilization |
| 本文献已被 万方数据 等数据库收录！ |
|
