Planting & Soil第 31 / 100 题
Applying a 3-inch layer of organic mulch around plants primarily provides what benefits?
a.Raises soil pH sharply
b.Eliminates all irrigation needs
c.Conserves moisture, moderates soil temperature, and suppresses weeds
d.Increases soil compaction
解析
A layer of organic mulch reduces evaporation, keeps soil temperatures more stable, and blocks light that weed seeds need to germinate. As it decomposes it also adds organic matter to the soil. Mulch is one of the most cost-effective water-saving practices in landscaping.
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