造成中低产土壤的主要因素是土壤养分缺乏，其次是部分土壤存在障碍因素。

All above are composed of lower to medium fertile soils and lacking of nutrients is of main reason of low yields.

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造成中低产土壤的主要因素是土壤养分缺乏，其次是部分土壤存在障碍因素。

All above are composed of lower to medium fertile soils and lacking of nutrients is of main reason of low yields.

youdao