Unverified90% confidenceDecision RuleTime unknown
园艺种植用珍珠岩优选3-6mm粒径，粒径过细(<2mm)易随浇水粉化板结、失去透气性；粒径过粗(>8mm)保水保肥能力差、幼苗易缺水
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Unverified珍珠岩粒径越大透气排水越强但保水保肥越差，两者不可兼得；耐旱多肉选粗粒(4-6mm)偏干爽，喜湿观叶植物选细粒(2-4mm)保水更好86% similarUnverified水培植物固定选用粒径8-15mm的石子最佳，过小（＜5mm）易堵塞根系间隙缺氧烂根，过大（＞20mm）无法固定细弱茎干84% similarUnverified扦插繁殖建议用1-3mm细粒珍珠岩纯基质，透气不烂根；成株盆栽混土时用3-6mm中粒，掺入比例20%-30%即可显著改善排水83% similarUnverified纯腐叶土保水强但透气差，长期单用易板结沤根；建议按腐叶土:园土:珍珠岩(或粗砂)=5:3:2配比使用，喜湿植物可提高腐叶土比例至6成78% similarUnverified纯细椰糠保水过度且结构易板结，单独作栽培基质需按体积混入20-30%珍珠岩或粗椰壳提升透气性，否则烂根风险高78% similar
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