In order to clarify the effect of zinc-iron fertilizer on grain yield and its trace element content in winter wheat,a wheat-maize intercropping experiment was conducted at the Douzou wheat-maize comprehensive experimental demonstration station of Northwest A&F University.Xinong 805 was used as the experimental material,and the two-factor split zone design was adopted.The fertilization amount of three kinds of zinc-iron fertilizers was the main plot,and the proportions of the four zinciron fertilizers were t...
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