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添加硝化抑制剂双氰胺对油菜生长及品质的影响

Keywords: 硝化抑制剂,双氰胺,硝酸盐,Vc,可溶性糖,油菜

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Abstract:

在盆栽条件下,研究了尿素中添加硝化抑制剂DCD为施入纯氮量的1%、2%、3%、4%、5%不同剂量时对油菜生长和品质的影响。结果表明,添加DCD能显著提高油菜产量并降低植株体内硝酸盐含量,其增产幅度为22.77%~33.50%,硝酸盐含量降低14.90%~30.51%,同时不同程度提高了油菜Vc、全氮、全磷含量。植株可溶性糖含量在DCD3%用量范围内呈上升趋势,用量大于4%时呈一定下降趋势。油菜吸氮量和氮素利用率在DCD3%水平达到最高。

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