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以平原褐土和潮土进行盆栽试验、微区试验和田间试验.结果表明,冬小麦吸锌高峰在分蘖至越冬和起身至挑旗两个时期;苗期和起身期是锌素营养关键时期,播前和返青期是诊断施锌的关键时期.土壤缺锌临界值为1ugg~(-1) DTPA-Zn;植株缺锌临界值为22ugg~(-1);冬前土壤P_2O_5/Zn适宜比值为44,小麦起身期植株P_2O_5/Zn适宜比值为109.本文还提出了不同肥力土壤的氮、磷、锌施肥配方和冬小麦夏玉米施锌方式
The pot experiment, field experiment and field experiment were carried out on plain cinnamon soil and alluvial soil.The results showed that the peak of zinc absorption in winter wheat was from tillering to overwintering and picking up the flag to two stages: seedling stage and starting stage were the key period of zinc nutrition, The pre-sowing period and returning green stage were the key periods for the diagnosis of zinc fertilization. The critical value of zinc deficiency in soil was 1ugg -1 DTPA-Zn, the critical value of zinc deficiency was 22ugg -1, and the suitable P_2O_5 / Zn ratio Was 44, and the suitable ratio of P_2O_5 / Zn was 109. The paper also proposed the fertilization formula of nitrogen, phosphorus and zinc in different fertility soils and the method of zinc application in winter wheat and summer maize