If only evaluation of economic benefit, rape was better than wheat, but the economic benefits of maize and soybean were bigger difference in different years.
仅以经济效益评价，油菜纯收益好于小麦，而大豆与玉米年份间差异较大。
If only evaluation of economic benefit, rape was better than wheat, but the economic benefits of maize and soybean were bigger difference in different years.
仅以经济效益评价，油菜纯收益好于小麦，而大豆与玉米年份间差异较大。
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