Big tree "replenishing water" with clever trick
In addition to the drop in the groundwater level that caused land subsidence and cracks, threatening the city’s infrastructure, the impact on garden plants has become increasingly severe. At the recent "National Garden Science and Technology Exchange Conference" held in Shanghai, Chief Engineer of the Beijing Garden Science Research Institute, Mr. Cong Renchen, appealed to the industry to pay more attention to this issue and share the "water supplement" coups of some ancient trees and trees.
“There are some big trees in Beijing. After they were dug up, they found that the roots are long.†The morning of the morning of the cluster said that the upward growth was due to the fact that the surface water was actually closer to the root than groundwater. Plants use ground rhizomes as the demarcation point, roots grow downwards to the center of the earth, and cadres grow upwards by centrifugation. This is the normal natural growth pattern, but it is now “abnormalâ€. In 1980, the groundwater level in the plain area of ​​Beijing was -6 meters, and by 2005 it had dropped to -20 meters. The situation is now more serious. Ultra-strength mining of groundwater is a serious problem faced by most cities in China. It will also become a new topic in urban afforestation management.
The so-called "big tree deep roots", in turn, said that "the deep roots are great" is the same as said, but the phenomenon of long roots led directly to the trees are not resistant to drought, not drought, not cold, not wind. “In this case, if the trees are still watered in accordance with the old methods, our generation is hard to leave behind big trees for future generations,†Cong said. To this end, he introduced a number of water conservation methods developed by garden maintenance workers in the production practice.
Method 1: For trees that have long been planted, you can dig a pit from 1m to 1.5m deep into a bucket. A PVC pipe is passed through the bottom of the bucket. The end of the pipe leads to the root of the tree. When it is watering, it is poured directly into the bucket and then it seeps into the soil where the root system is located.
Method 2: For trees that have already been planted, there is also a method of laying pipes on the vertical ground around the trunk, which can be used for watering and liquid fertilizers.
Method 3: For large and medium-sized arbors that have not yet been planted, PVC pipes are wrapped around the soil balls during planting. Cracks can seep through the pipes, and one or both ends of the pipes will be exposed on the ground. When the water is poured, it is directly poured into the pipes. Water use is more direct. effective.
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