摘要
采用模拟土柱试验方法,通过连续种植2茬蔬菜,研究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+双氰胺(基施),化肥+双氰胺(基、追肥各半),化肥+有机肥(N各半),有机肥(基施)]对蔬菜产量、硝酸盐含量及模拟土柱氮、磷随渗漏水淋溶损失的影响。结果表明,"化肥+双氰胺(基施)"和"有机肥(基施)"2种施肥模式,不仅能使蔬菜获得较高的产量、硝酸盐含量较低,还能明显减少蔬菜种植期间模拟土柱硝态氮、铵态氮和水溶性总磷随渗漏水淋溶的损失量,从而有效减少菜地土壤的氮、磷对地下水造成的农业面源污染。
A fertilization experiment was carried out on two cropping of vegetables growing in simulated soil column. The experiment was designed to have 7 fertilization patterns [ i. e. （ 1 ） CK or no fertilizer, （ 2 ） chemical fertilizer applied as basal dressing, （3）chemical fertilizer applied half as basal dressing and half as side-dressing, （4）chemical fertilizer and dicyandiamide applied as basal dressing, （5） chemical fertilizer and dicyandiamide applied half as basal dressing and half as side-dressing, （6） chemical fertilizer and organic manure （ half and half on N basis） , and （ 7 ） organic manure applied as basal dressing] to test effect of different fertilization patterns on yield and nitrate content of the vegetables, and loss of nitrogen and phosphorus from the simulated soil column. Results show that Pattern 4 and Pattern 7 not only produced higher yield of vegetables that were lower in nitrate content, but also significantly reduced leaching loss of nitrate-nitrogen, ammonia-nitrogen and water-soluble phosphorus from the soil column. Consequently, the findings can be used to effectively alleviate agricultural non-point source N and P pollution from vegetable fields to underground water bodies.
出处
《生态与农村环境学报》
CAS
CSSCI
CSCD
北大核心
2009年第2期68-73,共6页
Journal of Ecology and Rural Environment
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
施肥模式
产量
硝酸盐含量
氮磷淋失
vegetable
fertilization pattern
yield
nitrate content
loss of nitrogen and phosphorus
