The hour hand points to 10 o'clock in the morning. The 50-year-old Beijing vegetable farmer Tan Baolin walks into the vegetable greenhouse. "It's time to listen to music." He walked up to a one-foot-tall green instrument and pressed the play button. Suddenly, there was a monotonous depression. The "buzz" filled the entire greenhouse.
God! This is also called music? I listened to the patient for 3 minutes and it was really annoying. Tan Baolin laughed. "You think it's noise, but the food in this shed is lovely. Every hour in the morning and one in the afternoon, not only grow faster, but the output can increase by 20%!"
“You see, just a few days after this lettuce was planted, it has already been so high.†In the garden, a small piece of vegetable land, Tan Baolin pulled a fresh green leaf of more than a dozen centimeters of lettuce leaves. Rejoicing, "Look at this growth, at least than the ordinary greenhouse dishes can be harvested in advance for seven or eight days."
Acoustic waves help to speak of God's spirit. In principle, Lao Tan himself is also confused. It was the technical person in charge of the exhibition area that opened the mystery to the author. Originally, this instrument applied sound waves of a specific frequency to the plants through sound vocalization. After the sound waves stimulated, the vitality of the plants will be significantly improved, and the absorption capacity, synthesis ability, oxidation and reduction ability of the root system will be effectively promoted, and the growth and metabolism will be promoted. It becomes very strong.
The sound wave booster in the garden can emit 9 different sounds. Tan Baolin gave the author a demonstration: “嗡嗡â€, “呜呜â€, “咚咚â€... All the monotonous and low-lying, “How nice to talk about, but the experiment proved that plants like it!†Lao Tan told the author because every day Two hours of “Music edification,†the strawberries planted in the garden last year were 15 days older than ordinary greenhouse strawberries, and they taste sweeter.
Not only is the sound waves helpful, but in this “vegetable forest†exhibition area, there is also a method of growing vegetables called “aerosol cultivationâ€, which also gives the author a whole new look.
Hydroponic culture and matrix culture have become quite popular in agricultural production in recent years. To put it plainly, it is to grow vegetables in nutrient solution or in a substrate prepared with peat soil to increase production. What is the problem of "aerosol culture"? Tan Baolin led the author to the mint production area.
The peppermint in front of him did not grow on the ground, nor grew on the shelf, but grew on a slope of the foam plate that was tilted at 45 degrees. The two oblique planes are offset to form a three-dimensional triangle, planting space has increased twice as much as flat planting. But what's strange is that there is no pipeline on the foam board. How can the plant be fed?
"Mystery is behind the board." Tan Baolin unloaded one of the foam boards, and the moist water vapor rushed forward. There are three rows of supporting steel frames behind the original foam plate, and there is a spraying device every 50 cm on the steel frame. The nutrition liquefies into small droplets to moisten the bare roots of the plants.
"The benefits are: first, saving water and second, preventing disease." The technicians told the author that for every kilogram of leafy vegetables produced by aerosol cultivation, only 10 kilograms of water is needed, which is one-fortieth of that of ordinary grown vegetables. One quarter of vegetables. Because it grows in the air and does not touch the soil, it is hard to be attacked by germs.
Saying goodbye to the "aerosol cultivation" of vegetables, the author was again hung on top of a red box that drew the wind and drew the air. The red box reads the words "carbon dioxide generator." It is also connected to a liquefied gas tank at one end. “This is the way to add carbon dioxide to plants through gas combustion.†According to the technicians, just like people can't leave oxygen every day, plants cannot grow without carbon dioxide. In winter greenhouses, a certain temperature must be maintained, ventilation and ventilation will not be frequent, and the concentration of carbon dioxide will easily become low. Over time, the photosynthesis of plants will be affected.
“Supplementing carbon dioxide is the key to high-yield and stable production in the greenhouse in winter.†According to the technicians, previous experiments have proved that when the other growth environment is fully met, when the concentration of carbon dioxide in the environment reaches 1,000 to 2,000, the crop can be increased in yield. More than 40%.
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