生物质炭和氮肥配施对菠菜产量和硝酸盐含量的影响

被引:93
作者
张万杰 [1 ]
李志芳 [1 ]
张庆忠 [2 ]
杜章留 [2 ]
马铭烨 [1 ]
王一丁 [2 ]
机构
[1] 中国农业大学农学与生物技术学院
[2] 中国农业科学院农业环境与可持续发展研究所
关键词
生物质炭; 菠菜; 产量; 菠菜组织中硝酸盐;
D O I
暂无
中图分类号
S636.1 [菠菜];
学科分类号
090202 ;
摘要
施用生物质炭是提高作物产量和氮肥利用效率的潜在有效措施。以菠菜为供试作物开展盆栽试验,研究了生物质炭与氮肥配施对菠菜产量、组织中硝酸盐含量及养分(氮磷钾)含量的影响。生物质炭设3个水平:C0(0g·kg-1)、C5(5g·kg-1)和C10(10g·kg-1),氮素3个水平分别为N0(0mg·kg-1)、N1(90mg·kg-1)和N2(120mg·kg-1)。试验结果表明,在N0和N1水平下,施用生物质炭显著提高了菠菜产量,增幅为16.6%~57.3%,而在N2水平下,生物质炭对菠菜产量无显著影响(P>0.05)。同时,在N1水平下,与C0处理相比,C5和C10处理菠菜组织中硝酸盐含量分别增加了198.7%和233.4%;而在N2水平下,C5和C10处理的硝酸盐增幅分别为8.8%和46.3%。在不同氮素水平下,生物质炭的施用增加了菠菜对氮和钾的吸收,而对磷素吸收的影响不明显。总之,生物质炭与氮肥配施可以提高菠菜产量,明显增加氮肥当季利用效率。
引用
收藏
页码:1946 / 1952
页数:7
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