一立方码等于多少袋？

13.5 袋（每袋 2 立方英尺）。超过十袋左右，散装通常更划算，即使算上运费。

覆盖物应该铺多厚？

成型花坛铺 5–10 厘米。太薄杂草会冒出来，太厚会让根系缺氧并把水分闷在茎干周围。

覆盖物可以贴着树干吗？

不可以。堆到树干上会把湿气闷在树皮上，招来腐烂和啮齿动物，甚至可能勒死树。请离树干 8–15 厘米。

什么时候铺覆盖物？

春末土壤回暖后铺一次，寒冷地区秋季再铺一次以保护根系。铺得太早会让土壤一直偏冷。

覆盖物和堆肥有什么区别？

覆盖物铺在表面抑草保湿，堆肥拌入土壤提供养分。粗树皮若当作土壤改良剂使用，分解时会消耗氮素。

覆盖物计算器

计算花坛所需覆盖物的立方码数与袋数。默认厚度 3 英寸、每袋 2 立方英尺，这是零售最常见的规格。

公式与数据最后核对于 2026年8月6日 — Cosyslabs

输入

长度(ft)

宽度(ft)

厚度(in)

每袋规格

每袋单价（选填）($)

Result

Volume

1.85 yd³

Bags (2 ft³)

Cubic feet

50.0 ft³

Waste default: 0% — 覆盖物会自然沉降，但无需额外损耗系数，按实际尺寸测量即可。

Diagram

Estimates only. Verify with a licensed contractor or supplier before purchasing. Rough Estimator! is not responsible for shortages, overages, or material variances. See our methodology for formulas and sources.

公式

袋数 = (长 × 宽 × 厚 ÷ 12) ÷ 每袋体积（ft³）

参考资料

Measure what the tool asks for
This calculator works from 长度 in ft, 宽度 in ft and 厚度 in in. Measure the finished area you are covering, not the material — an estimate is only as good as the dimensions you feed it.
What it does with those numbers
袋数 = (长 × 宽 × 厚 ÷ 12) ÷ 每袋体积（ft³） Every figure on the page comes out of that one expression, so you can check it by hand.
Why it adds 0% waste
覆盖物会自然沉降，但无需额外损耗系数，按实际尺寸测量即可。
Choosing a 每袋规格
Pro tip: Bulk mulch breaks even at ~3–4 cubic yards. Below that, bagged is often cheaper once you factor in delivery minimums.
Where the numbers come from
The constants are taken from USDA Forest Service — Mulching guidance and correct depths, International Society of Arboriculture — Proper mulching techniques and Colorado State University Extension — Mulches for home grounds, linked in full below. If a figure here disagrees with your supplier's spec sheet, use the spec sheet — it describes the product you are buying.
What this will not tell you
This is a material takeoff, not a bid. It does not price labour, permits, delivery, equipment hire or site preparation, and it assumes a straightforward layout. Complex cuts, difficult access and awkward shapes all cost more than the geometry suggests.

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常见问题

用面积乘以厚度（英尺）再除以 27 得立方码。28 平方米的花坛铺 7.5 厘米约需 2.8 立方码。

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Cite this page

Cosyslabs. (2026). 覆盖物计算器. Rough Estimator!. https://roughestimator.com/zh/mulch-calculator

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