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包膜尿素减量化施用对大白菜产量品质及土壤硝酸盐含量的影响
引用本文:董亮,张玉凤,于淑芳,杨力,陈广思.包膜尿素减量化施用对大白菜产量品质及土壤硝酸盐含量的影响[J].农业环境保护,2011(2):316-321.
作者姓名:董亮  张玉凤  于淑芳  杨力  陈广思
作者单位:山东省农业科学院土壤肥料研究所 农业部新型肥料创制重点实验室 山东省肥料工程技术研究中心,济南250100
基金项目:十一五国家科技支撑计划项目“果树蔬菜高效施肥技术模式研究”(2008BADA4B05)
摘    要:通过埋袋法及大田试验,研究了包膜尿素的养分释放规律及其减量化施用对大白菜产量、品质及土壤硝酸盐含量的影响。结果表明,包膜尿素的氮素释放与大白菜的氮素吸收基本吻合。与习惯施肥等几个处理相比,30%减氮包膜尿素处理的大白菜产量最高,为39534.6kg.hm-2,20%减氮包膜尿素处理的大白菜Vc、还原糖含量最高,硝酸盐含量最低,有效提高了大白菜品质,减氮包膜尿素处理的大白菜含氮量较高,100%包膜尿素含磷、钾量较高;减氮包膜尿素处理减少了氮素向土体深层的淋溶损失,降低了环境污染风险。因此,减量施用包膜尿素能保证大白菜的产量、提高其品质,并有效减少硝态氮在土壤中的累积。

关 键 词:包膜尿素  大白菜  产量  品质  土壤硝酸盐

Effects of Decreasing Coated Urea Application on Chinese Cabbage's Yield,Quality and Soil Nitrate
DONG Liang,ZHANG Yu-feng,YU Shu-fang,YANG Li,CHEN Guang-si.Effects of Decreasing Coated Urea Application on Chinese Cabbage's Yield,Quality and Soil Nitrate[J].Agro-Environmental Protection,2011(2):316-321.
Authors:DONG Liang  ZHANG Yu-feng  YU Shu-fang  YANG Li  CHEN Guang-si
Institution:(Institute of Soil and Fertilizer,Shandong Academy of Agricultural Sciences;Key Laboratory of Invention and Manufacture of New Fertilizer Ministry of Agriculture the People's Republic of China;Shandong Engineering Research center for Fertilizers,Jinan 250100,China)
Abstract:Nitrogen release rule of coated urea(CU) was studied by covered-bag method and effects of coated urea(CU) application on chinese cabbage's yield,quality and soil nitrate were studied by field experiment.The results indicated that the nitrogen release rule of CU was in keeping with the nitrogen uptaking rule of chinese cabbage.Chinese cabbage's yield treated by decreasing 30% nitrogen CU treatment was 39 534.6 kg·hm-2 which was the highest compared with traditional fertilization treatment etc.Chinese cabbage's Vc content and sugar content were the highest treated by decreasing 20% nitrogen CU treatment,and this treatment also could reduce chinese cabbage's nitrate content effectively.Chinese cabagge's nitrogen uptaking treated by decreasing nitrogen CU treatment were higher than traditional fertilization treatment and 100% CU treatment,chinese cabagge's phosphor and potassium uptaking treated by 100% CU treatment were higher.Decreasing nitrogen CU treatment could reduce soil nitrate's leaching to soil depth,therefore,decreasing nitrogen CU treatment could reduce environment pollution risk.In a word,decreasing nitrogen CU treatment could ensure chinese cabbage's yield,increase quality and reduce soil nitrate's accumulation degree.
Keywords:coated urea  chinese cabbage  yield  quality  soil nitrate
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