Mulches reduce the growth of weeds, when the mulch material itself is weed-free and applied deeply enough to prevent weed germination or to smother existing weeds.

 
  • 覆盖物可以减少杂草的发生,覆盖物本身不含杂草,覆盖足够的厚度,可以阻止杂草的萌发,既有的杂草也可以被覆盖而消亡。
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