Unverified85% confidenceDecision RuleTime unknown
缺铁性黄化（新叶发黄、叶脉保持绿色）在碱性土/北方硬水地区首选EDDHA-Fe而非EDTA-Fe，EDDHA在pH>7.5仍稳定，EDTA-Fe在pH>6.5即开始失效沉淀
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85%
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Long-term
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Unverified螯合铁（EDTA-Fe/DTPA-Fe）配方比普通铁盐更贵，但在pH>6.5或硬水地区不易沉淀失效，硬水地区必选螯合态微量元素配方67% similarUnverified北方碱性水（自来水pH7.5-8.5）浇喜酸植物会持续中和土壤酸性，只调土不调水会反复变碱；应搭配柠檬酸或食醋调水（每升水加几滴白醋至pH5.5-6.5）64% similarUnverified已知土壤本身偏酸（pH<5.5）或使用了大量松针、泥炭等酸性基质时，不应再额外大量施硫磺粉，过酸（pH<4.5）会锁定铁锰导致喜酸植物反而黄化62% similarUnverified北方硬水地区不建议长期单独使用赤玉土做主基质，赤玉呈微酸性但被碱性水中和后pH上升，对喜酸植物效果打折，应搭配硫磺粉或改用酸性水浇灌61% similarUnverified无土栽培入门方案：低EC缓冲椰糠(细)+30%珍珠岩混合→泡发后测EC/pH→配Cal-Mag营养液→定期冲洗防盐分累积59% similar
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