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低磷条件下油菜施用磷肥试验结果初报

崔世明,王浩,杨宜生,袁姜丽,姜如存

China Agricultural Information（2011）

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Abstract
油菜系对磷敏感植物,缺磷显著影响产量.江苏省东台市油菜常年种植面积3万hm2左右.该市土壤耕层有效磷含量平均为13.9mg/kg(变幅2.8～56.7mg/kg),平均含量并不低,但仍有2.15hm2土壤缺磷.选择低磷地进行不同施磷水平试验,对促进油菜增产具有指导意义,试验结果表明,施磷能明显提高油菜籽产量,最高可增产15 10％,每666.7m2过磷酸钙用量不能低于50kg.
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