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本帖最后由 无视 于 2013-12-3 21:13 编辑
网上很多这种tip,例如这篇,http://answers.yahoo.com/question/index?qid=20110612055431AARuOhr
1.Adjust your lawnmower blade so that it's cutting the grass at longer heights. By cutting the grass down really low, you're making it difficult for the grass to get enough sunlight to become healthy. A healthy cutting height is three to four inches. At this length, grass is able to send down stronger, deeper roots and collect enough sunlight to become lush and green.
2. Make sure your lawnmower blade is sharp before each cutting and sharpen it every two to three times you use it to ensure you're cutting the grass cleanly and not tearing it. Dull lawnmower blades will tear the grass, causing it to spend time and energy repairing itself instead of growing thick and green.
3.Water deeply--at least one inch of water each time--and infrequently. By watering deeply but infrequently, the top section of the soil will dry out and the grass roots will dig down deeper into the soil to reach the water that is located there. If you water frequently, the roots won't bother to dig down deep because there will always be water available near the surface. When grass is watered too frequently, it will create clumps and runners that block the soil from being able to access sunlight and water; this weakens the grass and prevents it from being able to become as thick and green as you'd like.
4. Leave grass clippings lying on the lawn after each mowing. The grass clippings break down and compost, adding nutrients to the soil that help the growing grass become healthier.
5. Poke holes into your lawn occasionally using spiked shoes, a screwdriver or a lawn aerator. These holes allow more moisture and air to get down into the soil and loosen it up so the grass roots are more easily able to dig down to healthy depths.
6.Add compost to the lawn each fall to help build up the soil quality and add nutrients the grass will be able to use the next season.
第3点强调不能多浇水,但每次要浇透,我一般一个星期浇一次水,每次1inch,一个装鱼的can满了为止
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