不同时期水氮处理对滴灌冬小麦旗叶光合特性、保护酶活性及产量的影响
不同时期水氮处理对滴灌冬小麦旗叶光合特性、保护酶活性及产量的影响
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ZHAO Jinke , XU Xuexin , QU Wenkai , LIU, Shuai , XU, Yufan , MENG Fangang , JIA Jing and ZHAO Changxing
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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】探究华北地区的高效水氮管理模式,明确按需滴灌条件下水氮耦合对冬小麦旗叶光合特性、衰老特性及产量的影响。【方法】以济麦22为供试材料,在滴灌条件下设置了N1(180 kg/hm2)和N2(210 kg/hm2)2个施氮梯度,S2(拔节期和开花期)和S3(拔节期、开花期和灌浆期)2种按需滴灌时期的组合处理,以传统灌溉施肥方式(施氮量240 kg/hm2,播前底施90 kg/hm2,拔节期追施150 kg/hm2后畦灌)为对照(CK),于2019—2021年冬小麦生长季开展大田试验,研究了按需滴灌条件下不同时期水氮处理对冬小麦旗叶光合及衰老特性、产量形成及水氮利用的影响。【结果】与CK相比,随着灌水频次的增加,冬小麦群体叶面积指数(LAI)、旗叶的SPAD值、净光合速率(Pn)、气孔导度(...
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不同时期水氮处理对滴灌冬小麦旗叶光合特性、保护酶活性及产量的影响
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TN_cdi_wanfang_journals_ggps202209006
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https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_wanfang_journals_ggps202209006
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1672-3317
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10.13522/j.cnki.ggps.2022092