| 摘要 |
<p>The invented all-purpose protection cylinder for plants is made of white polyethylene or similar material of various widths and heights and is carried out without holes at the bottom, with holes of up to 1 cm2 in the middle, and with holes of 2-4 cm2 on the top, the holes serving for aeration or fixing of a supporting rod. It is permanently welded on one side, or it can be closed by a pin-and-hole press-lock patented system. The invention assures the protection against hail, draught, sun, frost and pest, it enhances growth and the plant needs less spraying and tying. The cylinder made of transparent polyethylene and without holes serves for protection of roots against pest, fertilizers and growth of dew roots. It is made of recycled polyethylene and does not threaten groundwater.</p> |
