【摘要】 本文采用土壤农化分析手段和田间生物试验方法,评价黑龙港流域古河道细质沙土施用微量元素的有效性。结果表明:该地区土壤肥力低,严重缺乏氮、磷等大量元素;土壤有效微量元素锌、铁和硼含量均低于临界浓度;花生施用锌、铁、硼和钼肥分别增产13.9%。12.0%,8.0%和3.0%,小麦喷施锌、锰肥分别增产16.2%和4.8%。更多还原

【Abstract】 Soil analysis and field experiments were conducted for evaluation of the micronutrient avail- ability in fine sandy soils in Heilonggang District.The results indicated that N、P nutrients were seriously deficient and available Zn、Fe and B concentration were lower than the critical value respectively;ZnSO₄、 Fe-EDTA,Borax and（NH₄）₂MoO₄ fertilization increased yield of peanut by 13.9%,12.0%,8.0% and 3.20%,while ZnSO₄、MnSO₄application increased yield of winter wheat by 16.2% and 4.8% respecfively.更多还原