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我国耕地土壤处于亚健康
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我国耕地土壤处于亚健康
2015年9月20日,在中国优质农产品发布促进会上,农业部种植业司副司长何才文表示,目前我国耕地土壤长期处于亚健康状况,存在退化面积大、污染面积大、有机质含量低、土壤地力低等问题。退化方面,目前我国耕地退化面积占耕地总面积比重达40%以上,具体表现为东北黑土地变薄、南方土壤酸化、北方土壤盐碱化;污染方面,耕地污染面积大,全国耕地重金属点位超标率达19%以上;有机质方面,我国有机质含量目前仅为2.08%,其中东北黑土地有机质含量只有3%,较开发之初的7%明显下降;土壤地力方面,土壤地力偏低,目前我...
Seed China News 201509 (Chinese version)
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