不同光照对夏玉米产量及其根系生理特性的影响

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本研究于2012-2014年在山东农业大学试验农场和作物生物学国家重点实验室进行。选用郑单958(ZD958)和登海605(DH605)为试验材料。设置全生育期遮阴(播种-收获,S3)、穗期遮阴(拔节-开花,S2)、花粒期遮阴(开花-收获,S1)和花粒期增光(开花-收获,L)。6月上旬播种,种植密度67500株·hm-2。肥料按12000kg×hm-2的产量水平施氮肥300 kg×hm-2、磷肥120 kg×hm-2、钾肥240 kg×hm-2。氮肥分别于拔节和大喇叭口期施入40%和60%,磷肥和钾
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