控释氮肥减量对糜子干物质积累、光合特性及产量的影响
控释氮肥减量对糜子干物质积累、光合特性及产量的影响
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Xinxiang City: Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage
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Xinxiang City: Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage
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【目的】探究黄土高原旱作区糜子高效施肥模式，明确控释氮肥减量对糜子光合同化能力及产量的影响。【方法】以当地习惯尿素纯氮施氮量120 kg/hm2（TN）为对照，设置控释氮肥纯氮施氮量120 kg/hm2（T1）、108 kg/hm2（T2）、96 kg/hm2（T3）、84 kg/hm2（T4）、72 kg/hm2（T5）和不施氮肥（T0）7个处理，探究不同氮肥处理后糜子干物质积累分配、旗叶光合特性、SPAD值、NBI及产量的变化规律。【结果】①施氮显著提高了糜子各生育期干物质积累量及旗叶光合能力，与常规尿素相比，控释氮肥等量施用可提高糜子生育中后期干物质积累量4.44%~8.77%，增加成熟期干物质分配到穗中的比例1.58%~2.75%，且年际间结果基本一致；②施用控释氮肥提高糜子旗叶SP...
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控释氮肥减量对糜子干物质积累、光合特性及产量的影响
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TN_cdi_wanfang_journals_ggps202306002
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https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_wanfang_journals_ggps202306002
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1672-3317
DOI
10.13522/j.cnki.ggps.2022664
