The experiment was conducted to find the approaches of realizing high yield of onion by optimizing transplanting time, density and fertilizer application.

通过栽培时间、密度及肥料施用等栽培技术的试验研究，寻找地膜洋葱在当地取得高产的途径。

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Application organic fertilizer for long time can improve the content of humus, and inorganic fertilizer can enhance the content of Fulvic acid, decrease the content of humic acid.

长期施用有机肥能提高胡敏酸的含量，施用无机化肥可提高富里酸降低胡敏酸的含量。

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The yield of two times of the fertilizer application at bell stage was similar to that of one time.

拔节期和大喇叭口期分两次追施和大喇叭口期一次施入产量相近。

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