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g/ m* z- g E0 XFairy rings, caused by a number of fungi, produce peculiar patterns in home lawns. Fairy rings often consist of a dark green ring or arc with an inner ring of dead brown grass. The size of the ring can range from a few inches to more than 50 feet in diameter. Following irrigation or rain, mushrooms often suddenly appear within the rings.
6 i. H# M5 z/ z$ `; |$ l' YThe presence of mushrooms usually indicates an organic source of nutrients, such as a buried tree stump, is nearby. When you see a mushroom growing in a lawn, you are only seeing a small part of the fungus. The fungus also grows underground as a thread-like mass that is called mycelium. This mycelium tends to grow in all directions from a central point. Thus, an invisible circular pattern occurs. The fruiting bodies (mushrooms) then tend to appear in a circular pattern.) e9 k C6 m ?2 p' [
Usually on the inside of the fairy ring, a dark green ring of grass will be evident. This is because extra nitrogen is available in that area where the fungal mycelium has died.
& o! h+ a; c3 [3 b' v2 Y8 ~8 aThere is no good control for fairy ring. Mushrooms can be temporarily removed by regular mowing or raking. Since fairy rings are most visible on low fertility conditions, you can mask the fairy rings by regular applications of low rates of nitrogen.& Q9 w9 o7 ?1 ?
# w/ ~& ]2 v! v2 d! U[ 本帖最后由 kingsnake 于 2008-6-21 22:43 编辑 ] |
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发表于 2008-6-15 15:03
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蘑菇挺好看的呀,干嘛要踩死?
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遇到同行啦!
