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作 者 ：伍少福^1,2;吴良欢¹;尹一萌³;杨曙东³;陈贤友¹

期 刊 ：应用生态学报 2007年 18卷 02期 页码：383-388

关键词：芹菜；

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54.0 kg·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.

Abstract: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 nu-
tritional quality of edible parts, e . g ., the Vc, amino acid, soluble sugar, N and P contents in-
creased, 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 transf-
ormation 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.

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