秸秆直接还田对土壤养分及物理性状的影响

Effect of Straw's Returning Application to Soil Nutrients and Physics Characteristics

调查了河北省石家庄市秸秆直接还田土壤的养分含量和物理性状。结果表明:随秸秆直接还田年份的增加,土壤有机质、碱解氮、速效磷和速效钾含量均明显提高,土壤物理性状明显改善;秸秆直接还田提高了土壤的有效铁含量,但对有效铜、有效锌和有效锰含量影响不大。

We examined the nutrient content and physical characteristics of soil treated with recycled straws so as to reveal the effects of the treatment. The results showed that the contents of organic matter, alkaline nitrogen quick result phosphorus and kalium increased much dramatically in soil with time gone. And physical characteristics of soil was meliorated. The content of the available ferrum enhanced by recycled straws, but that of the available zincum, copper and manganese had no changed obviously in soil.