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- W986430260 abstract "＂科农199＂是利用染色体工程技术培育的高产稳产小麦新品种,其抗寒、耐旱、抗干热风,根系发达,生育中后期能够高效吸收深层土壤的水分养分。本文研究了氮肥、磷肥、水分运筹等对＂科农199＂产量潜力的影响,为＂科农199＂的栽培推广提供参考。试验从2008年开始,在冬小麦各主要生育期收集数据、取样并进行相关处理;在收获后进行室内考种,考查千粒重、穗粒数、单株穗数、产量等重要性状指标。通过田间试验发现,＂科农199＂小麦无论低氮或高氮供给条件下都比其他品种积累更多的干物质并向籽粒中分配,从而形成较高的经济产量;大田节肥试验中施纯氮120 kg.hm-2时单产6 532.5 kg.hm-2,氮肥偏生产力达54.4 kg.kg-1;施纯氮180 kg.hm-2时单产7 312.5 kg.hm-2,氮肥偏生产力达40.6 kg.kg-1。在低磷定位试验中,＂科农199＂表现出分蘖力强、成穗率高、收获群体大的特点。在冬前底墒水充足的条件下,春季灌水1-2次可满足亩产千斤的水分需求。现阶段冻害干旱等极端气候高发频发,推广＂科农199＂这类抗逆稳产品种,可提高我国小麦生产可持续性,有助于保障粮食安全。" @default.
- W986430260 created "2016-06-24" @default.
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- W986430260 date "2011-01-01" @default.
- W986430260 modified "2023-10-18" @default.
- W986430260 title "冬小麦新品种科农199高产稳产特征分析" @default.
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