低但维持在作物需求水平上,且能降低CaCl以控制磷素的流失,说明添加稻草和草炭有利2-P于设含量施土壤磷素的管理,且稻草的效果总体上比草炭好。
(2)设施土壤磷素形态的变化受有机物料种类及其用量的影响。就各形态磷素占全磷的比例来看,
稻草O-P和草炭均能降低设施土壤无机磷中Al-P、
Fe-P和HROP,增加有进土壤,说Al-P明在高机磷、
Fe-P磷中和的LOP设O-P施和土壤MROP,等无机中,
磷有而降向机有物低机态料MLOP可的能促和
LOP和MROP转化。
(3)从设施土壤磷素各组分与和CaCl土壤MBP2-P含量的相关变化性的分重要析来形态看,
Fe-P土壤,
Fe-P和MROPMBP、
Olsen-P对Olsen-P是影响影响最大,
而Fe-P、Al-P和MLOP均是影响CaCl量2-P含MBP变、化Olsen-P的重要和形态CaCl,
表明Fe-P是综合影响设施土壤2-P含量变化的重要形态。
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