Have you ever observed a tree on the street?
Hanging needles, sweat steaming with white plastic wrap, and sometimes people in green overalls who give them "skin care products", these trees are always doing some human behavior.
Are they curing the disease? Or health?
Heather flowers, the girl smells blushing, but why do the gardeners in Wuhan have to keep cultivating it?
Regarding the trees in Wuhan, there are some questions that have bothered me for a long time.
It wasn't until I met a Frankenstein that these problems were solved.
01
SCIENCE FREAK!
Protect the big tree
Frankenstein vs. Insects
Dong Likun
He is Dong Likun, 42 years old, a researcher at the Wuhan Institute of Landscape Architecture, and I met him in the office, he has dark skin, sweatpants with sandals, wears a pair of thick glasses, and has a low voice.
The first time he said it, I thought the man was serious and funny.
"Like a gem, how beautiful." There were a few bugs on his desk, and he actually picked up a green shell and handed it to me??
There was a cockroach in the office building, and he immediately went over to crouch down to observe, calmly analyzing the species with me.
Why are botanists obsessed with insects?
To heal the tree.
Almost all trees will grow insects, such as celestial cows, aphids, termites... They will eat trees.
It is divided into three categories: stinging suckers, which have needles in their mouths like mosquitoes, suck the blood of trees, and the leaves they suck will turn yellow and wither; the leaf-eating birds, which eat the leaves into potholes; and the moths, which burrow directly into the trunk of the tree to eat wood.
They are the main enemy of trees, the most ferocious of the borers, led by the larvae of the Celestial Bull, which you may have raised when you were a child.
It burrowed into the trunk and ate around the bark, and the tree was half-dead and warped.
Some trees are physically strong on the surface, in fact, they have long been eaten into hollows by Tianniu, last year's typhoon, many trees in Wuhan fell, and Tianniu cauldron.
It's disgusting.
Adult tianniu. When we were young, we caught the Celestial Bull and drew circles on the ground for the Celestial Bull to fight.
On the street, you can always see gardeners cutting on trees, which is digging up cattle. Some tree covers white plastic wrap sweat steaming, which is moxibustion, medicine steamed into the tree body, poisonous tianniu.
But these methods alone do not work very well, because Tianniu is too cunning.
Celestial bull larvae. Bad children who peeled the bark of the tree in childhood knew that when the bark was peeled off, there might be layers of reddish-brown "mud", which was the feces of the celestial cows, and they were cunning, blocking the nest with feces, and the medicine could not be entered.
"This thing always has a natural enemy to rule, right?" More than a decade ago, Dong Likun thought so.
He found that in the primeval forest, unattended trees were healthier, the insect biological chain was balanced, and more of the fierce characters who ate the celestial cow.
He applied for a research project on the control of natural enemies, and over the years, he has been catching insects in the wild in order to find the natural enemies of pests, in short, to treat insects with insects.
He kept a large number of pests in captivity in the research room, juvenile tianniu, aphids, chongyang wood moths (eating leaves is very fierce)... They are used as food and distributed to their natural enemies.
Compare, who eats fast, who has more babies.
This project has been done for more than ten years, and some laboratory-trained "xueba" have collapsed as soon as they arrive at the exam, which makes Dong Likun very helpless.
For example, Tianniu Group Xueba, Wheat Moth Soft Cocoon Bee, eats a lot in a Petri dish, Dong Likun sends it to the tree to eat pests, and immediately does not work.
Swollen-legged bees eating tengu. At present, the institute has begun mass production of swollen leg bees, with more than 100 in each small bottle. Distribution to garden units.
Swollen-legged bees are spirit awakeners. It is not a meter-sized, but it can kill a tianniu that is dozens of times larger than itself, lay eggs on the carcass of tianniu, and 3 swollen-legged bees can hatch 100-200.
"You see, the first time it stings the Tianniu, the Tianniu faints, and it doesn't wake up for two or three days. Dong Likun took me into the cultivation room, the swollen leg bee came with its own artifact, and the mouth needle had a paralyzing effect.
The chongyang wood spotted moth group won out was the cockroach, a kind of spanking insect, the smell in the breeding room... I took a cursory tour and came out. Dong Likun photographed.
Dong Likun has been dealing with insects for more than ten years, resulting in a wonderful bondage, after doing research, eating pests and failing the exam "poor students" have been raised as pets by him and placed in all corners of the research room and office.
He occasionally took it out and played with it for a while.
Peacock mantis
When he saw that there were the bodies of praying mantises and spiders in the mosquito-killing lamp used in the family community, he frowned, "Oh, this insect killed all." "Words are full of regret.
"We'd better engage in ecological control, like the East Lake Greenway, the environment is good, and there are beneficial insects and pests." Dong Likun said that now, the Wuhan Garden and Forestry Bureau has begun to plant flowers next to trees on the sidewalk.
For example, on Sanyang Road, there is an extra flower bed next to the trees on the sidewalk, which is not only beautiful, but also for insect prevention.
Flowers attract all kinds of bees and kill pests from neighbors' homes.
Heather flowers are best used, it is almost non-insect resistant, the trunk is healing, the flowers are not attractive, but especially attract bees.
"Hey, if you have to say what it is, the Garden Bureau hasn't planted much in the past two years."
02
PLANT DOCTOR!
Ask the tree
I prescribed all the medicines wrong
Trees, like people, get sick. Dong Likun's office is the Wuhan Plant Clinic, which gives trees a physical examination and opens cases.
Trees have a cancer, wilt, that infects from the roots and dies if left untreated. "They don't come to see the patient themselves."
In the past half a month, someone on Wuluo Road has skinned the tree, which is a surgical operation. The wound of the tree is not stitched up and will gradually decay into a hole in the tree.
The largest number of street trees in Wuhan is the camphor tree, followed by the Fatong tree, because these two trees have strong healing ability, can resist small diseases, and almost no major diseases.
It is so difficult to see a doctor for plants, Dong Likun and I "study medicine" to understand common diseases: yellowing disease, tree iron deficiency caused by yellowing of leaves, leaf spot disease, black spots on the leaves...
He took me to the park to give the tree a physical examination, and I, one after another, misdiagnosed.
"Yellowing disease!" I pointed to the yellowed camphor tree, and he plucked the leaves, which had small black holes in the leaves, which were made by stinging insects.
"Worm suck!" I picked up another leaf with a black hole, and he shook his head, "This is leaf spot disease." ”
I went to be a doctor, and Wuhan was afraid that it was going to become a Gobi. Dong Likun said, "Many sick garden workers can't distinguish between them. ”
Stinging insects are dry.
He gave me an example, peach trees can get glue disease, which is similar to people's injuries and bleeding scabs, it is difficult to distinguish whether it is caused by fungal infections...
I didn't understand, I only heard of peach gum, an artifact of beauty and beauty, "That's not better if you get sick." I asked.
Dong Likun picked his head, "That thing is some polysaccharides, which cannot prove that it can be digested by the human body." ”
03
LOVELY DAD!
Take off the cloak of science
He's a cute dad who's good at catching bugs
Throughout the afternoon, Dong Likun and I walked into the woods, dug up the heavenly cattle, and harvested a few one-horned immortals.
The sunlight in the shade of the trees jumps like spots, the cicadas rise and fall, and we are like walking into a Japanese drama for an outing.
Walking out of the research room, he became a little cute, the photographer held up the camera, he specially sucked the stomach, "Oh, not very able to collect, you see this, this, take a side? ”
He often went to primeval forests, such as Shennongjia, and the herbarium was filled with butterflies, beetles, ladybugs, moths he had collected...
It's really beautiful, the colors are richer than gemstones, they shine different lusters in the sun, and the grains are delicate, such as embroidery.
His daughter was in elementary school and knew from memory that her father was different. She took a picture with her father, who put a praying mantis on her head and told her that this was beautiful and did not bite people.
The bugs that flew into the classmates were all shot to death, and the bugs that flew into their own homes were raised by their fathers with bottles, and the mother actually acquiesced.
There are always "monsters" sent home, spiders as big as bowls, square praying mantises, and Dad was particularly happy to receive them.
But dad is very powerful, when he was a child, he dug a unicorn fairy, other people's father poked his ass to find half a day, and Dong Likun dug several. The school asked for silkworms, and dad accidentally raised more, hatched thousands of them, fried all the silkworm pupae, she and her mother did not eat, all of which were eaten by dad.
"Copy through the water, fry it in warm oil." Dong Likun smacked his lips, he said that many insects can be treated in this way, fragrant, protein is very high.
I began to envy him, turning everywhere I went into treasure, and living a little more wonderful and fortunate.
///
Back in the office, Dong Likun showed me his new research project, a mobile app, which will be introduced to the market in the future.
There are common pests and diseases of various plants in the knowledge, people take photos of the trees in front of their homes, upload, Dong Likun and the small partners of the institute can consult online, which is much more convenient.
But the app doesn't have a reward mechanism either, "What if no one downloads it?" I asked him.
The 42-year-old was surprised to hear this, his eyes widened, "How come, everyone treats trees as friends." ”