The effect of root barrier on wheat growth and yield was studied in the system of poplar young growth intercropping with wheat by means of farm testing.
采用田间试验的方法，研究杨树幼林与小麦间作系统中，设置根障对小麦生长和产量的影响。
The dominant effect of visual system determines the cognitive model of visual preference, the root of imagic thinking mainly characterized by visual imagery.
由于视觉系统的强势作用，形成了认知模式的视觉偏爱，决定了以视觉表象为主要特征的思维的具象性。
The effect of nitrogen fertilizer on soil enzymatic activity and rhizosphere microorganisms of Yumai 49-198 root system was studied in this paper.
在大田高产栽培条件下，研究了不同施氮水平对豫麦49-198根际微生物和土壤酶活性的影响。
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