Too much mulch can restrict oxygen and water flow to the soil and harm roots.
太多的盖土会阻止氧气和水流入土壤，同时还会对根系有害。
Wide plastic film mulch has demonstrated obvious positive effect on soil temperature.
宽地膜覆盖对土壤温度有明显的正效应。
Mulch is important to home gardens but also to farms.
覆盖物对家庭菜园和农田都非常重要。
Mulch is one of the best things people can do for their plants.
覆盖是人们对作物所能做的最好的事情之一。
Mulch is one of the best things people can do for their plants.
覆盖是人们对作物所能做的最好的事情之一。
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