Cicada insects chaos of summer long gone, but some of the Nanjing road on both sides of the trees the city is still left traces of the alien insects. Yesterday afternoon, reporters from the door of Hanzhong Hanzhong Road along the direction to go all the way Xinjiekou found that there are many trees on the beetle's nest hole, this reporter interviewed the relevant departments, and listened to experts and insect experts in botany views.
Beetles are beetles, is a wood boring insects, many types have more than 2000 kinds of Chinese, Nanjing main thing is Anoplophora glabripennis, A. chinensis, mulberry longicorn beetle cloud spots, such as Monochamus alternatus. There are peach pink bungii pear, acacia tree in the two-section beetles. Beetles that Nanjing often say "water bull." They will drill through your mouth in the trees, affecting water and nutrient uptake of trees will lead to deforestation. They lay their eggs in the bark, the April will fly pupation, 5 June to nutritional supplements, start a new round of eggs, the current winter season is the more beetles.
Become victims of childhood plaything
60s of last century, the Hu lived in temples in the vicinity, in memory of his childhood near temples Jianye Road, Mo-road roadside planted plane trees, willows. At that time he and his partners favorite small edge in the bush to catch called "water bull," the worm, and then withhold it in the neck with a rope and let it fly in the air, or put it to seize on the bottle to see it swimming . "The insect's body is black, some dark green, also with white spots above his head with two black and white 'pigtail' (antenna). This little bug is the most powerful of its teeth, just saw the same sharp teeth holes in the bark, 10 minutes to bite into the trunk go, they generally stay in the trunk do not come out of the nest. "Hu recalled with great interest. However, Hu was found recently along the roadside trees Hanzhong Road, there are many beetles build the nest hole, "it bite trunk are empty, strange feel bad for."
Many trees belly empty
Yesterday, 12:30, Hanzhong Road to reporters along the direction Xinjiekou. Nanjing Cement Industry Design & Research Institute in the vicinity of Green Island, the reporter found a diameter of about 80 cm of plane trees, in the trunk and branches of the bifurcation, with a diameter of about 30 cm beetles cavity, cavity was inverted triangle, which had been completely gnawing away, near the trunk have also been dry crack. Reporter to the nest hole with a Shugun poke a bit to find that all Heiqu Qu viscous material, there are many cobwebs wrapped around gnawing away inside the trunk.
Reporters traveling with the management of a landscape Baixia staff surnamed Chen told reporters that the beginning of these cavity is not entirely built of digging beetles. "As the old city of Nanjing trunk trees generally lower trunk on the twigs often broken by passing vehicles or by wind Guaduan, old tree twigs are broken, the break point and then the formation of holes, which nests for the Longhorn Beetle parasitic provides a great convenience. "
Kingsley near the Sheraton Hotel in the sidewalk, the reporter saw a Kewutongshu central trunk has a nearly 50-centimeter-long wound, which has been gnawing away, and out of the yellow liquid, many ants crawling around in the above . Province Chinese Medicine Hospital in the door, a diameter of about 50 cm from the ground plane trees one meter from the trunk to the twigs I had to form a 1-meter-long gnawing away at the belt, gnawing away inside is gnawing away at the range with large almost a whole tree trunk hollow.
Experts on Pest Control
Nanjing Research Institute of trees garden room Dade warranty engineer Wei told reporters: "Nanjing City street trees are the main threat is the threat of beetle larvae, beetle larvae due to growth in the trunk of trees, the larvae of the number of more than one time Tree Road will result in a long large gnawing away at the organization, if the organization is a large area of trees cut off Road, then the tree died. "reporter that there are more cavity trees are mostly skinny trunk, branch skew.
Dade Wei Road engineers also told this reporter, in August, when management had Baixia landscape garden in conjunction with Nanjing Research Institute of the experts, along with the trees of the area carried out on control work, "we have taken measures mainly two, one is 'up enemies' is stocked in the trees on some of guani as guani hi beetle larvae prey; the other is there are beetles in the trees trunks and branches inoculation, both Point measures have played a certain effect. "
For the prevention and treatment of trees on the beetles, Nanjing Forestry University, School of Forest Resources and Environment Professor Yan Aojin said: "If you want to control it, should start in May in their 'sent' when spraying in the forest canopy, to prevent them in the branches and the trunk to lay eggs. In addition, options should be considered when planting trees in a variety of trees in mixed species, so the speed would slow down the spread of pests. Another point, the garden department can choose to 'resistance' strong planting trees, as days cattle like weak tree. " I am China Suppliers writer, reports some information about eagle scout gift , cat lover gift.
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