全膜覆盖条件下旱地春玉米增产效应及机理研究

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水资源是旱地作物生长的主要限制因子。地表覆盖可有效蓄水抑蒸保墒,改善土壤环境,进而提高作物产量,其中,全膜覆盖在旱地应用效果较好。为探究全膜覆盖对于旱地春玉米的增产效果及其机理,本研究以先玉335春玉米为供试材料,设置全膜覆盖(全膜双垄沟播)和对照(露地平作)两个处理,于2016年4月至2016年9月在中国科学院长武黄土高原农业生态试验站进行一年的大田试验,通过监测春玉米产量、土壤温度、植株生物量、0-200cm土层土壤含水量及速效氮含量、根系时空分布及根区土壤速效氮含量,揭示旱地春玉米在全膜覆盖栽
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