摘要
采用模拟土柱试验方法,通过连续两茬蔬菜试验,研究了7种不同施肥模式(即:不施肥,化肥基施,化肥基追肥各半,化肥和双氰胺基施,化肥和双氰胺基追肥各半,化肥和有机肥各半,有机肥基施)对蔬菜株高、株重、产量、氮累积量、氮肥利用率及模拟土柱硝态氮和氨态氮随渗漏水淋溶损失的影响。结果表明,化肥和双氰胺基施、有机肥基施等2种施肥模式,不仅能改善蔬菜植株的农艺性状,提高蔬菜产量、植株氮累积量及氮肥利用率,还能明显减少蔬菜种植期间模拟土柱的硝态氮和氨态氮随渗漏水淋溶损失量,从而减少了菜地土壤氮对地下水造成的农业面源污染。
Used the method of simulative soil columniation experimentation, through trials of sequential two-stubble vegetable, 7 different kinds of fertilization modes （i. e. applying none fertilizer, chemical fertilizer applied as base manure, chemical fertilizer applied half as base manure and half as additional one, chemical fertilizer and dicyandiamide applied as base manure, chemical fertilizer and dicyandiamide applied half as base manure and half as additional one, applying chemical fertilizer and organic manure, applying organic manure. ） were conducted to test the effects of using different kinds of fertilization modes on plants＇ tallness and weight, yield and nitrogen-accumulation of vegetable, utilization ratio of nitrogenous fertilizer, and nitrogen lost with leaching-water from simulative soil columniation. Results showed that. Used those two kinds of fertilization modes, such as chemical fertilizer and dicyandiamide applied as base manure and applying organic manure, not only plants＇ agricultural properties could be improved, yield and N-accumulation of vegetable and utilization ratio of N-fertilizer could be increased, but also the amount of nitrate-N and ammonia-N, which were lost with leaching-water from simulative soil columniation during the session of planting, was obviously decreased. Consequently, agricultural non-point source pollution of N on ground-water resulting from vegetable field soil was cut down.
出处
《水土保持学报》
CSCD
北大核心
2009年第3期48-52,共5页
Journal of Soil and Water Conservation
基金
福建省自然科学基金(2006J0249,U0650005)
福建省科技厅重点项目(2007T0015)
关键词
蔬菜生长
施肥模式
氮素累积
氮肥利用
氮素淋失
vegetable growth
fertlization modes
nitrogen accumulation
nitrogen utilization
nitrogen loss
