资源简介
灌耕灰钙土上间作对土壤有机磷组分的影响，杨思存，田秀丽，甘肃炎黄灌区是典型的石灰性土壤，土壤有效磷含量低，施入的磷肥易被转化为固定
态的磷，很难被作物吸收利用，出现资源浪费、环�
态的磷，很难被作物吸收利用，出现资源浪费、环�
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