在园艺应用，珍珠岩是用来作为在世界各地的一个组成部分无土混合增长，提供最佳的通风和湿度保持优势植物生长。

In horticultural applications, perlite is used throughout the world as a component of soilless growing mixes where it provides aeration and optimum moisture retention for superior plant growth.

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房间内的最佳相对湿度应在12%至16%之间。

The best room relative humidity should be 12% to 16%.

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柴达盛产奶酪，因为人们在没有制冷设备以前，这里的山洞是贮藏奶酪的最佳地点，其温度和湿度都合适。

Cheddar is also famous for its cheese production worldwide as people once used those caves in the gorge to store it, for the temperature and humidity were excellent.

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