The rational fertilization areas in different precipitation years were put forward, and analysis on the fertilization plan for the maximum yield and optimum economic effect was made.
并提出了不同降水年型的合理施肥范围，分析了最大和最佳产量的施肥组合及其经济效益。
The rational fertilization areas in different precipitation years were put forward, and analysis on the fertilization plan for the maximum yield and optimum economic e...
并提出了不同降水年型的合理施肥范围，分析了最大和最佳产量的施肥组合及其经济效益。
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