rexresearch.com
Liu BINJIANG, et al.
ElectroCulture & ElectroHusbandry
https://www.scmp.com/news/china/science/article/2164365/electric-plants-powering-chinas-new-agricultural-revolution
China
is making its vegetables grow bigger, faster and stronger
... using electricity
Scientists
hail breakthrough as results of the world’s largest
experiment confirm fruit and vegetable output can soar
without chemical pesticides and fertilisers
by
Stephen Chen
Chinese growers have the answer to a question that has been
baffling scientists for three centuries: Can electricity boost
plant growth?
To find out, China has been conducting the world’s largest
experiment and the results are transforming agricultural
production in the world’s most populous nation with a jolt.
Across the country, from Xinjiang’s remote Gobi Desert to the
developed coastal areas facing the Pacific Ocean, vegetable
greenhouse farms with a combined area of more than 3,600
hectares (8,895 acres) have been taking part in an “electro
culture” programme funded by the Chinese government.
Last month the Chinese Academy of Agricultural Sciences and
other government research institutes released the findings of
nearly three decades of study in areas with different climate,
soil conditions and plantation habits. They are hailing the
results as a breakthrough.
The technique has boosted vegetable output by 20 to 30 per cent.
Pesticide use has decreased 70 to 100 per cent. And fertiliser
consumption has dropped more than 20 per cent.
The vegetables grow under bare copper wires, set about three
metres (10 feet) above ground level and stretching end to end
under the greenhouse roof. The wires are capable of generating
rapid, positive charges as high as 50,000 volts, or more than
400 times the standard residential voltage in the US.
The high frequency electricity kills bacteria and
virus-transmitting diseases in the air or soil. It also
suppresses the surface tension of water on leaves, accelerating
vaporisation.
Within the plants, the transport of naturally charged particles,
such as bicarbonate and calcium ions, speed up and metabolic
activities, like carbon dioxide absorption and photosynthesis,
also increase.
Professor Liu Binjiang, government agriculture scientist and a
leading member of the project, said the electric current flowing
through the wires is only a few millionths of an ampere by
volume – lower than a smartphone cable’s workload.
“It does absolutely no harm to the plants or to humans standing
nearby,” he said.
Thanks to the positive findings of the study, the area devoted
to electrified farms in China is now growing with unprecedented
speed, according to Liu, from 1,000 to 1,300 hectares each year.
That means up to 40 per cent growth in electro culture farming
could be achieved within the next 12 months.
“Most recent investments have come from the private sector,” Liu
said. “The business is taking off. We are supplying the
technology and equipment to other countries including the
Netherlands, United States, Australia and Malaysia.
“China is a step ahead of the world.”
THE HISTORY
It was not always so. In fact, China was more than 200 years
late to the game.
In 1746, just a few years before Benjamin Franklin sent a kite
to catch lightning in a storm, Dr Maimbray of Edinburgh in
Scotland electrified two myrtles.
He observed the trees put forth new branches in October,
something which had never happened before.
The news travelled. Many similar studies were carried out across
Europe, some confirming Maimbray’s findings, others not.
One experiment in Turin, Italy, for instance, found the plants
became unfruitful and wilted after an unusually prolific period.
In 1902, physics professor S. Lemstroem visited the Arctic
region and discovered some trees grew faster under the aurora
borealis than those in milder climates further south.
Lemstroem attributed the phenomenon to the natural electrical
conditions produced by the aurora, also known as the northern
lights. He conducted a series of experiments in the laboratory
to prove it and even wrote a book to promote his hypothesis.
British physicist Sir Oliver Lodge, a key inventor in the
development of radio, read the book and reportedly achieved a 24
to 39 per cent increase in wheat grain yield in an eight-hectare
experiment.
It caught the attention of governments. The British and American
authorities each commissioned separate studies on electro
culture in the early 20th century.
The British findings were positive, while the American results
were negative.
These experiments were mostly small and conducted in open
fields, with conditions which varied from one location to
another. The wide range of natural elements affected the final
output and there was no universal standard for hardware design
or technical details such as voltage and frequency.
The scientists in these pioneering studies also lacked advanced
equipment, such as today’s portable spectrum analyser, to study
the plant’s response to electricity at the molecular level.
As a consequence, explanations of the observed phenomenon
remained speculative and interest waned with the advent of
chemical fertilisers and pesticides to achieve mass agricultural
production.
CHINA TAKES
THE LEAD
Public interest in electro culture revived with the rise of
organic farming and the Chinese government started funding
experiments in the technique in 1990.
He Feng, senior technician of Yufa Jingnan Vegetable Production
and Sales, one of Beijing’s largest vegetable producers, said
the company had taken part in the programme since 2014 and the
results were “very satisfactory”.
In just two years the electrified vegetables had brought in
extra revenue of nearly 1.2 million yuan (US$175,000).
“We are still running the equipment, which consumes very little
power,” he said.
One hectare of electrified greenhouse requires about 15
kilowatt-hours of electricity per day, which is about half the
power usage of an average American family.
Inside the greenhouse the air smells like the aftermath of a
summer thunderstorm. Humidity is low and the plants rarely get
sick.
The biggest burden is the installation cost, He said, with the
necessary hardware costing tens of thousands of yuan. Without
government support, the company could not have afforded to wire
up all its greenhouses.
Liu Yongyi, owner of City Luhai Xinghua Sightseeing Agriculture
company in Beijing’s Daxing district, which is also engaging in
electro culture, said the technology would significantly improve
China’s food safety by massively reducing the use of pesticides.
“Pesticide residue is a huge threat to public health.
Electricity provides a physical solution to disease and pest
control. It is much cleaner than chemicals. The government
should subsidise the electro culture revolution,” he said.
Liu said visitors to the farm were intrigued when they saw the
system at work and he believed the public would be quick to
embrace the technology.
“The theory is easy to understand. I believe people would be
willing to pay a premium for electrified vegetables and fruits
in the near future,” he said.
Professor Guo Yalong, a researcher at the Chinese Academy of
Beijing’s Institute of Botany, said the impact of electricity on
plant “definitely exists”.
“Electricity is like air and water. It is part of the natural
environment,” said Guo, who was not involved in the project.
“Many ionised particles in plants have either negative or
positive charges. They can respond to the presence of a man-made
electric field nearby,” he said.
China has greenhouses covering more than 4 million hectares,
producing nearly 1 trillion yuan worth of vegetables each year.
Professor Liu said there were no plans to electrify them all, as
the investment would be unaffordable for most farmers.
His project team is taking a different approach and developing a
compact, all-in-one vegetable growing chamber using electro
culture technology.
“Each family would be able to grow their own food in the
kitchen, on the balcony or in the backyard,” he said.
The chamber uses an artificial light source and electric field
to stimulate plant growth and prevent diseases. Operation is
automatic and almost care and maintenance free.
“One day these tiny chambers may become an alternative to large
scale farms,” Liu said. “That would trigger another agricultural
revolution.”
https://www.newscientist.com/article/mg24332440-800-inside-chinas-attempt-to-boost-crop-yields-with-electric-fields/
Inside
China's attempt to boost crop yields with electric fields
In
greenhouses across China, scientists are exposing lettuces
and cucumbers to powerful electric fields in an attempt to
make them grow faster. Can electroculture work?
by Donna
Lu and David Hambling
AT FIRST blush, the huge commercial greenhouse on the outskirts
of Beijing doesn’t seem unusual. Inside, lettuces sit in neat
rows and light pours in through the glass above. But there is a
soft hum and an intense feeling in the air, almost as if a
thunderstorm is on the way. The most obvious sign that this is
no ordinary growing space is the high-voltage electrical wiring
strung over the crops.
This place may be different, but it is far from unique. Over the
past few years, greenhouses like this have sprouted up across
China, part of a government-backed project to boost the yield of
crops by bathing them in the invisible electric fields that
radiate from power cables. From cucumbers to radishes, the
results are, apparently, incredible. “The overall quality is
excellent,” says Liu Binjiang, the lead scientist on the
project. “We’re really entering a golden age for this
technology.”
Using electricity to boost plant growth – not by powering
heaters or sprinkler systems, but simply by exposing plants to
an electric field – is an old idea. It is also controversial.
Electroculture was tested in Europe many decades ago and found
wanting, with the results too inconsistent to be any use. The
mechanism was also mysterious: no one knew how or why electric
fields might boost growth. So what exactly is going on in
China’s new greenhouses? Can you really improve agriculture
through the power of electric fields – and if so, how?
It was Finnish physicist Karl Selim Lemström who introduced the
world to the idea of electroculture in the …
&c...
https://www.scmp.com/news/china/science/article/3043280/chinas-electrifying-idea-stop-african-swine-fever-high-voltage
China’s
electrifying idea to stop African swine fever: a
high-voltage pigsty
Researchers to wire up pens for 2,000
pigs and generate an electric field they believe can kill
germs
A farm in central China that previously
conducted the experiment reported no cases of swine fever
by
Stephen Chen
Scientists are planning a high-voltage electricity experiment at
a farm in southwestern China to create cleaner conditions for
animals and explore whether doing so could help halt the African
swine fever
pandemic.
Cables will be installed around pens housing about 2,000 pigs to
create an electric field – an invisible force surrounding an
electric charge – which the scientists believe will purify the
air. They aim to test whether a method already believed to
improve animal welfare can restrict the spread of the pandemic,
which has decimated China’s hog herd.
The experiment will be conducted at a medium-sized hog farm in
Chengdu, in China’s largest pig-rearing province, Sichuan.
Led by Professor Liu Binjiang, a government scientist in
northeastern China, it was inspired by Liu’s work on a national
“electro culture”
programme that has been shown to benefit crops by using a
combination of electric field and artificial lighting to
stimulate plant growth and reduce diseases.
This time, Liu and collaborators will generate a static electric
field of 50 kilovolts – more than 400 times the voltage in a
standard US household plug.
They believe the high-voltage discharges could break down
chemicals such as ammonia that generate unpleasant odours,
reduce biological aerosol by 50 to 90 per cent, kill germs and
generate negatively charged particles in the air that bind to
air-polluting chemicals and make them harmless.
Despite the high voltage, the volume of electrons in the cable
will be extremely low, at about 1 microampere, producing an
electric field that would not be harmful to animals or staff,
according to the researchers.
Pig pens are to be wired with cables and dischargers to generate
an electric field, which is believed to purify air. Photo:
Professor Liu BinjiangPig pens are to be wired with cables and
dischargers to generate an electric field, which is believed to
purify air. Photo: Professor Liu Binjiang
Pig pens are to be wired with cables and dischargers to generate
an electric field, which is believed to purify air. Photo:
Professor Liu Binjiang
Scientists are planning a high-voltage electricity experiment at
a farm in southwestern China to create cleaner conditions for
animals and explore whether doing so could help halt the African
swine fever
pandemic.
Cables will be installed around pens housing about 2,000 pigs to
create an electric field – an invisible force surrounding an
electric charge – which the scientists believe will purify the
air. They aim to test whether a method already believed to
improve animal welfare can restrict the spread of the pandemic,
which has decimated China’s hog herd.
The experiment will be conducted at a medium-sized hog farm in
Chengdu, in China’s largest pig-rearing province, Sichuan.
Led by Professor Liu Binjiang, a government scientist in
northeastern China, it was inspired by Liu’s work on a national
“electro culture”
programme that has been shown to benefit crops by using a
combination of electric field and artificial lighting to
stimulate plant growth and reduce diseases.
This time, Liu and collaborators will generate a static electric
field of 50 kilovolts – more than 400 times the voltage in a
standard US household plug.
They believe the high-voltage discharges could break down
chemicals such as ammonia that generate unpleasant odours,
reduce biological aerosol by 50 to 90 per cent, kill germs and
generate negatively charged particles in the air that bind to
air-polluting chemicals and make them harmless.
Despite the high voltage, the volume of electrons in the cable
will be extremely low, at about 1 microampere, producing an
electric field that would not be harmful to animals or staff,
according to the researchers.
“The air quality [for the pigs] should improve when the device
is powered up,” Liu said. “Electricity is one of the many ways
to improve living conditions for farm animals. We have a long
to-do list.”
When the high-voltage electricity was used to improve air
quality at a farm in central China’s Hubei – one of the
provinces hit worst by African swine fever – none of its pigs
died from the virus, according to Liu.
Electrifying pig farms to create force fields that scrub the air
of deadly viruses could be the next big breakthrough China needs
to restrict the spread of ASF.
It had been deployed to enhance animal welfare and prevent
airborne diseases such as foot and mouth, but the lack of
African swine fever cases was a surprise. It led the team to
hypothesise that the electric field had caused a change in the
environment that prevented the virus thriving.
The deadly African swine fever pandemic has tended to spread
more easily among pigs living in dirty, unhealthy conditions,
according to some studies.
PATENTS
https://worldwide.espacenet.com/patent/search/family/034148888/publication/CN2609910Y?q=in%20any%20%22Liu%20Binjiang%22&queryLang=en
Inventors:
LIU BINJIANG, et al.
CN2609910
Electric
purifying aseptic sterilizing device for animal house
Abstract
The utility model relates to an electric purifying aseptic
detoxicating device for a livestock and poultry house, which can
purify air and kill pathogenic microorganisms in the air and on
the object surfaces in the livestock and poultry house at any
time, and is characterized in that the electrode net which
consists of a main supporting insulator, an auxiliary supporting
insulator, a high voltage electrode wire and an ozone generating
assembly, and is suspended above the inner space of the
livestock and poultry house is supplied with power through a
direct high voltage power supply which is controlled by a time
controller. Therefore, a space direct corona electric field is
formed by the electrode net, the ground surface of the livestock
and poultry house and the building structural surfaces, and
meanwhile, the electrode net discharges electric power into the
air and produces high energy charged particles and ozone. The
space direct corona electric field, the high energy charged
particle and ozone simultaneously purify and sterilize the dust
carrying germ and virus, flying foam in the air and pathogenic
microorganisms on the surfaces of solid and liquid medium in the
livestock and poultry house.
CN202011770
Electric
treatment device for cultivation water body
Abstract
The utility model discloses an electric treatment device for
a cultivation water body, which is provided with a shell,
wherein a first electrode with the two ends connected with the
shell is arranged on a center line of the shell; a first
electrode contact is arranged at one end of the first electrode;
a second electrode fixed on the inner wall of the shell is
sheathed at the middle part of the first electrode; a second
electrode contact penetrating through the shell is connected
with the second electrode; and a water inlet and a water outlet
are respectively arranged on the shell at the two ends of the
second electrode. Injurious protozoa or large living beings in
the cultivation water which enter the shell by circulation can
be killed instantly with the insect-killing efficiency of 100%,
thereby ensuring that no bacteria and insects live in the whole
pond. The electric treatment device for the cultivation
water-body does not need aeration treatment and the like and has
the advantages of simple structure, convenience in use, good
sterilizing and insect-killing effect, low treatment cost of the
water body and the like.
CN102167426A
Electric
treatment device for culture water body
[ PDF ]
Abstract
The invention discloses an electric treatment device for
culture water body. The device comprises a shell; the center
line of the shell is provided with a first electrode of which
two ends are connected with the shell; one end of the first
electrode is provided with a first electrode contact; a second
electrode which is fixed on the inner wall of the shell is
sleeved in the middle of the first electrode; a second electrode
contact which passes through the shell is connected with the
second electrode; and the shell of two ends of the second
electrode is provided with a water inlet and a water outlet. The
device can instantly kill harmful protozoa or large-scale
organisms of the culture water which circularly enters the shell
and guarantee the water in the whole pond can be sterile, and
the insect killing efficiency is 100 percent. In the device,
aeration treatment and other treatment are not needed, and the
device has the advantages of simple structure, good
sterilization and insect killing effect, low water treatment
cost and the like, and is convenient to use.
CN1833479A
Electrical
treatment method and appts for soil continuous prodn
obstacle
[ PDF ]
Abstract
An electric treating method for getting over the continuous
cropping obstructions of soil, such as infectious diseases and
pests, the harmful substances including organic acid and high pH
value, features that two electrodes connected to the positive
and negative ends of power supply respectively are parallelly
and oppositely buried in the soil whose water content is 5-40%
and a voltages is applied across them for electrolyzing the
soil. Its apparatus features that the positive end of the second
winding of a transformer is connected via diode to one electrode
and its negative end is directly connected to another electrode.
CN2917839Y
Soil
sequential cropping obstacle electricity treating plant
[ PDF ]
Abstract
The utility model discloses a continuous cropping obstacle
electric processing device for the soil. The utility model is
provided with a transformer B and is characterized in that: the
secondary positive terminal of the transformer B connects with
an electrode (1) via a diode D, the negative terminal of the
transformer B connects with an electrode (2). By adopting the
method, the device may get rid of the soil-borne diseases, and
organic acids and harmful matters excreted by root system, and
continuous cropping obstacles such as quite high PH valve of the
soil.