控释氮肥与速效氮肥配施对玉米氮素吸收及利用的影响
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S513.062

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公益性行业项目(201303103);国家粮食丰产科技工程项目(2012BAD04B02)


Effect of Combined Application of Controlled-Release Nitrogen Fertilizer and Fast-Release Nitrogen Fertilizer on Nitrogen Absorption and Utilization of Maize
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    摘要:

    采用田间试验研究3个施氮水平(0、105、150 kg/hm2)与2种配施比例(控释氮肥100%、控释氮肥与速效氮肥配比为70∶30)对玉米产量、干物质积累、氮素积累、转运及氮肥利用效率的影响。结果表明,施氮可显著提高玉米产量,提高幅度为10.4%28.2%。其中N150 kg/hm2处理玉米产量最高。在相同氮水平条件下,控释氮肥与速效氮肥配施处理玉米产量高于单施控释氮肥处理。施氮可显著提高玉米各生育期干物质积累量和氮素积累量,并随施氮水平的提高而提高。在相同氮水平条件下,控释氮肥与速效氮肥配施处理玉米各生育期干物质积累量和氮素积累量高于单施控释氮肥处理。氮素农学利用率和当季回收率均随施氮水平的提高而提高,氮肥偏生产力表现为随施氮水平的提高而降低。在相同氮水平条件下,控释氮肥与速效氮肥配施处理氮肥当季回收率、农学利用率和偏生产力均高于单施控释氮肥处理。

    Abstract:

    Effects of three nitrogen levels(0, 105, 150 kg/ha) and two fertilizer mixture proportions(100% CRN and 70% CRN+30% FRN) on maize yield, dry matter accumulation, nitrogen accumulation, translocation and nitrogen use efficiency were studied by field experiments. The results showed that maize yield was improved significantly by nitrogen fertilizer application, and increased by 10.4%~28.2%. Yield was the highest in the treatment of N150 kg/ha. The maize yield of the treatment of 0% CRN+30% FRN was higher than that of the treatment of 100% CRN under the same condition of nitrogen level. Nitrogen fertilizer application improved Dry matter accumulation and nitrogen accumulation was significantly improved by nitrogen fertilizer application in different growing stages, and dry matter accumulation and nitrogen accumulation increased with the increment of nitrogen levels. Nitrogen agronomic use efficiency and recovery efficiency enhanced with the increment of nitrogen levels, and partial fertilizer productivity of nitrogen fertilizer reduced with the increment of nitrogen levels. Nitrogen recovery efficiency, agronomic use efficiency and partial fertilizer productivity of the treatment of 70% CRN+30% FRN was higher than the 100% CRN treatment under the same condition of nitrogen level.

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张磊,杨建,侯云鹏,尹彩侠,谢佳贵,王立春.控释氮肥与速效氮肥配施对玉米氮素吸收及利用的影响[J].东北农业科学,2017,42(1):24-27.

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  • 收稿日期:2016-11-19
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  • 在线发布日期: 2024-12-06
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