含硝化抑制剂DMPP复合肥对日光温室芹菜生长和营养品质的影响  

Effects of DMPP-compound fertilizer on greenhouse celery growth and nutritional quality

作　　者：伍少福[1] 吴良欢[1] 尹一萌 杨曙东[2] 陈贤友[1] 

机构地区：[1]浙江大学环境与资源学院环境修复与生态健康教育部重点实验室 [2]浙江省嵊州市农业科学研究所,浙江嵊州312464

出　　处：《应用生态学报》2007年第2期383-388,共6页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金项目(30370838);浙江省科技攻关项目(021102084);浙江省"三农五方"科技协作计划资助项目(SN200404)

摘　　要：通过田间试验研究了含硝化抑制剂DMPP复合肥对日光温室芹菜生长和品质的影响.结果表明,与普通复合肥相比,一次基施DMPP复合肥67.5和54.0kg.hm-2氮处理分别使芹菜增产5.78%和10.14%;DMPP复合肥可降低芹菜可食部分硝酸盐含量,提高Vc、游离氨基酸、可溶性糖及氮、磷含量.与分次施用相比,适当减少DMPP复合肥施用次数和用量可提高芹菜产量并改善其品质,降低生产成本.DMPP复合肥在施入土壤中后具有显著的硝化抑制作用,延缓了菜地土壤铵态氮向硝态氮的转化,降低了氮素向水体迁移的风险.芹菜收获后土壤中全氮、铵态氮、硝态氮残留较多,有利于保持地力.A field study with greenhouse celery （Apium graveolens L. ） showed that compared with basal application of ordinary compound fertilizer, one-time basal application of DMPP-compound fertilizer （ENTEC , 12-12-17） at the rates of 67.5 kg N · hm^-2 and 54. 0 kg N · hm^-2 increased the yield by 5.78% and 10. 14%, respectively. The application of ENTEC also improved the nutritional quality of edible parts, e. g. , the Vc, amino acid, soluble sugar, N and P contents increased, while nitrate content decreased. Compared with basal plus side dressing applications, appropriately reducing the application rate and times of ENTEC^＊ had more beneficial effects on celery yield and quality, and reduced the production costs. ENTEC^＊ could suppress the transformation of soil NH4 ^＋ -N to NO3^- -N effectively, and thus, its application could retain soil residual N more in NH4^ ＋ -N than in NO3 ^- -N form after celery harvested, resulting in a reduction of nitrate leaching.

关 键 词：DMPP复合肥 硝化抑制剂 品质 芹菜 

分 类 号：S626[农业科学—园艺学] S636.3