Promote Agricultural Multi-span Steel-frame Greenhouses

 Since 2021, in order to shoulder the political responsibility of grain production and stabilize the planting area of ​​double-cropping rice, the Leiyang local Government in central China has issued the "Leiyang City 2021 Agricultural Multi-span Steel Frame" according to the current situation of spring ploughing production in our city and the subsidy policy for the purchase of live agricultural machinery. Greenhouse Purchase Subsidy Pilot Implementation Plan", arranges special accumulation funds, fully promotes the application of agricultural multi-span steel frame greenhouses, and strives to make up for the shortcomings of early rice facility-based seedling rearing to "escort" grain production.

Up to now, Leiyang City has installed and put into use a total of 13 agricultural multi-span steel frame greenhouses, covering 11 towns and towns, with a total area of ​​36,903 square meters. The standard is 26 yuan/㎡), the provincial subsidy fund is 295,224 yuan (the subsidy standard is 8 yuan/㎡), and the accumulative subsidy fund at the same level is 738,060 yuan (the subsidy standard is 20 yuan/㎡). Leverage agricultural machinery professional cooperatives and users to invest about 2 million yuan.

Use of Insect-proof Nets in Greenhouses

Why should we install insect nets in greenhouses? There are two main reasons. In addition to promoting the growth of greenhouse vegetables, it also has many benefits for ensuring the environment in the greenhouse. Although the role of insect nets is obvious, improper installation and use will also have side effects.

The purpose of installing agricultural insect-proof nets in greenhouses

(1) Pest control After covering the insect control net, it can basically avoid various insect pests such as cabbage caterpillars, diamondback moths, and aphids.

(2) The anti-disease and insect-proof net can play a role in preventing diseases, especially the spread of aphids, cutting off the transmission of pests, especially the spread of aphids, greatly reducing the incidence of virus diseases, and avoiding the spread of viruses to agricultural greenhouses. with catastrophic consequences.

(3) The temperature-controlling insect-proof net can adjust the temperature and soil temperature of the agricultural greenhouse. In the hot summer, the greenhouse is covered with a white insect-proof net, and the temperature in the greenhouse in the morning and evening is the same as that in the open air, but at noon is about 1°C lower than that in the open air; Covering the black insect net in the season can achieve the effect of heat preservation and effectively reduce frost.

(4) Humidity control The insect-proof net can prevent part of the rainwater from falling into the agricultural greenhouse, reduce the humidity in the field, reduce the incidence of disease, and reduce the evaporation of water in the greenhouse on sunny days.

(5) Shading light In summer, the light intensity is large, and the strong light will inhibit the vegetative growth of vegetables, especially leafy vegetables, and the insect-proof net can play a certain role in shading and shading.

Smart Agricultural IoT Greenhouse Control

Smart agricultural Internet of Things is widely used in various fields of modern agriculture and is based on the development of current technology and high-speed networks. Greenhouses are now everywhere, and there are many types of greenhouses, including tunnel greenhouses, glass greenhouses, cold sheds, single-span sheds, multi-span greenhouses, and so on. They can be used for planting vegetables, fruits, seedlings, scientific research, sightseeing and other purposes. 

The application of the intelligent Internet of Things system in the greenhouse refers to the intelligent greenhouse control system. The intelligent greenhouse control system fully employs modern information technology, integrates software, intelligent control, IoT technology, audio and video technology, wireless communication technology and wisdom and knowledge to realize the informatization and standardization of key links in greenhouse control. The comprehensive application of various information technologies such as networking and geographic information systems in greenhouse control realizes more complete informatization basic support, more thorough agricultural information perception, more concentrated data resources, more extensive interconnection, and more in-depth information. Intelligent control, more intimate public service.

How does agricultural IoT make greenhouse control systems "smart"?

Intelligent greenhouse control system does not only refer to automatically control the room temperature of the greenhouse, fans, air conditioners, roller shutters, internal and external sunshades, etc., but also to automatically control irrigation and fertilization, and monitor the soil in real time through soil nitrogen, phosphorus and potassium sensors and soil moisture sensors. Nutrients and water in the water, control irrigation and fertilization through the monitoring of such data parameters

Types of Greenhouses

1. Simple hoop greenhouse

The simplest greenhouse, also called "Spring and Autumn Greenhouse" in China, is mostly used in the spring and autumn seasons in China. Such greenhouses have poor ability to resist the seasons.

2. Solar greenhouse

This most traditional greenhouse for growing vegetables in winter is also the most widely used vegetable greenhouse for planting and production in the north. The structure of the greenhouse is simple, the use of sunlight to recruit students to heat up, the roller shutter quilt to keep warm, and the internal soil wall to keep the temperature and other structural advantages, has always been the main force for vegetable
cultivation in the north.

3. Film multi-span greenhouse

Thin-film multi-span greenhouses belong to the category of semi-intelligent greenhouses, and their productivity and later transformation and upgrading are relatively high. There are also many construction standards. It can be simply designed and constructed, or the equipment of the smart greenhouse can be added. The height and span can be planned and designed according to the needs. The multi-span greenhouse is a necessary productive greenhouse for the planning and construction of the park.

4. Smart glass greenhouse

Smart glass greenhouses belong to the category of smart greenhouses and are a model of modern agricultural projects. Its production design specifications are rich, the configuration is rich in humanization, and the shape and planning can be designed. It has strong ability to resist wind and snow, and the internal heating and cooling facilities are all available.

Asia's Largest Single-span Flower Greenhouse to be Set up in Anning

Covering an area of ​​158 acres -  equivalent to the size of 14 standard football fields, with expected annual output of fresh cut flowers over 30 million... it will be the largest single-span flower greenhouse in Asia. It is expected to be put into operation in the Rose Modern Industry Plantation Base of Anning Modern Flower Industrial Park within this year. The greenhouse automatically controls the temperature, light, water, humidity, and air in the greenhouse through automatic sensing probes, and realizes fully automatic management. After completion, it will "make a sample" for a peaceful, efficient, intelligent and ecological flower planting mode.

Asia's Largest single-span flower greenhouse

In August 2020, the Anning Modern Flower Industrial Park project was officially launched. Among them, the Rose Modern Industrial Plantation Base was built in 2009, covering an area of ​​more than 1,000 mu, with a planting area of ​​more than 600 mu. After the base is built, the traditional soil cultivation mode will be maintained. In recent years, with the rise of soilless cultivation, in August 2020, Anning Northward Flower Industry Co., Ltd. upgraded and transformed the traditional planting model in the park, and in 2020, 416 acres of fertilizer-saving, controllable, environmentally friendly, and high-yield plants will be built. High-quality soilless cultivation intelligent modern flower planting base.

After upgrading and renovation, the production of roses in the park has doubled. According to reports, soil cultivation produces about 60,000-80,000 flowers per mu per year, and the yield of soilless cultivation is 2-3 times that of soil cultivation, while the amount of labor and fertilizer used in soilless cultivation is only two-thirds or even of soil cultivation. half.

Walking into the Rose Modern Industrial Plantation Base in Anning City, I saw roses neatly lined up in the greenhouse. The flowers were raised in a half-meter-high foam planting tank with a drip irrigation belt in the middle. There were many intelligent sensor probes installed in the shed. . "This smart probe is very powerful. It can sense which flower is short of water, fertilizer, or how much. The other end of the sensor probe is connected to the water and fertilizer workshop. The staff adjusts the parameters according to the actual situation of the flower plant, and automatically distributes fertilizer and water. , and then water and fertilize through the drip opening on the drip irrigation belt." Wang Zixi, deputy general manager of Anning Northward Flower Industry Co., Ltd., introduced.

"Not only that, the shading net in the greenhouse will automatically switch on and off according to the light intensity, and the circulation fan will automatically switch on and off according to the temperature and humidity. In the past, one person could manage up to 3 acres of land. Only part of the meticulous bud picking and flower cutting work requires manual operation." Wang Zixi said.

It is worth mentioning that during the entire rose planting process, not a single drop of waste water will flow into the soil. In addition, the company has also built the world's most intelligent and advanced fresh-cut flower processing workshop, with an average daily maximum processing capacity of 600,000 stems.

More importantly, carbon dioxide, the "culprit" responsible for global warming, will play a role in the newly built Asia's largest single-span greenhouse. The company will entrust a third-party company to collect industrial waste gas, purify the carbon dioxide and supply it to the greenhouse to increase the efficiency of rose photosynthesis. In this way, not only the utilization rate of waste gas can be improved, but also the carbon dioxide content in the atmosphere can be reduced, and high-quality flowers can be planted.

Greenhouse Brings "Smell of summer" in the cold winter

During the Spring Festival holiday, many people are still busy in working, like the seedling farmers in Dongtai City, Jiangsu Province, the "Town of Watermelons". With the help of modern agricultural technology, even in the cold winter, the watermelon seedlings here are raised. And this has brought them good economic benefits.

Although it is a cold day, the smart greenhouse in the seedling base in Dongtai City, Jiangsu Province is warm and green. Watermelon farmers are skillfully grafting watermelon seedlings.

Liu Guorong, head of a seedling base in Dongtai City, Jiangsu Province: In the past, the culture of watermelon seedlings could not be guaranteed due to the impact of cooling and cold waves. After electrified intelligent constant temperature cultivation, precise control of temperature, humidity, environment, etc. has been achieved. Now it is possible to to cultivate year-round.

This special insulation resistance wire is laid in the soil, which can convert electrical energy into heat energy. Like the floor heating installed at home, the temperature rises steadily and the temperature is uniform. It is very beneficial to the growth and development of watermelon seedlings, and the emergence rate can reach 95% in winter.

Zhou Aifeng, an agricultural technician from a nursery base in Dongtai City, Jiangsu Province: The temperature in the shed can be maintained at around 20°C even at night. The traditional heating method has poor constant temperature effect and heavy air pollution, and the survival rate of melon seedlings is only about 70%.

The extension of the production cycle and the increase in the emergence rate have doubled the number of seedlings emerging in these greenhouses compared with last year, at the current price of USD 0.2 per plant. Only one greenhouse can bring nearly one million yuan of output value. And this production model is also adopted by more and more growers.

The improvement of the quality of seedlings has also directly driven the local watermelon planting. At present, the watermelon planting area in Dongtai has expanded to 4,500,000 hectares, with an annual output of one million tons of watermelons, with a total output value of over USD 0.5 billion, and an average income of over US dollars $24,000 per hectare.

Happy Life in Strawberry Greenhouse Village of Henan

 On January 31, Chinese New Year's Eve, the warm winter sun shone on the strawberry greenhouse. Stepping into the warm, spring-like greenhouse, rows of strawberries are in full bloom, and the red strawberries are "hiding" in the green leaves, looming and mouth-watering.

Villager Eating in the Strawberry Greenhouses

"I'm too busy, so I can only eat the dumplings in the strawberry greenhouse." Wang Xinlin, a big strawberry grower in Luosong Village, Yaojia Town, Zhongmu County, Henan Province, said a little shyly, "Now is the key season for strawberry picking, and the market demand The quantity is large and the price is high, in order to hurry up, we can only spend the New Year in a greenhouse.”

While eating dumplings, Wang Xinlin instructed others to pick them: "You can't pick very ripe ones. The ones that are half-ripe and slightly bluish-white at the tail are the best. They can be stored well and have a high sweetness."

"In the past few days, the temperature has warmed up, and the ripening speed of strawberries has accelerated. We must accelerate the picking." Wang Xinlin said, looking at the strawberries that were already ripe in the shed, "Tomorrow is the New Year, and the market demand is also very large. Seize the opportunity and sell a good one. Price."

Wang Xinlin has planted three strawberry greenhouses this year, and the "loverberry" and "guifei" planted are growing well. From November 2021 to June 2022, he can harvest a lot of crops. The three strawberry greenhouses can earn up to 130,000 yuan.

Luosong Village is a well-known local professional village for the cultivation of greenhouse watermelons and greenhouse strawberries. As early as 20 years ago, the watermelons of Luosong Village were sold in the surrounding cities because of their early maturity and high sweetness. In recent years, the village has vigorously advocated the development of greenhouse strawberry cultivation, which has changed the previous focus on greenhouse watermelons and ignored the potential opportunities in the strawberry market around the Spring Festival. Today, watermelons in greenhouses, strawberries in greenhouses, and two horse-drawn carriages are running side by side.

The picture shows the villagers holding freshly picked strawberries. Photo by Guoxi

"In order to make the strawberries more sweet and delicious, the strawberries in the whole village are pollinated by bees to increase the brightness and sweetness of the strawberries, and improve the taste, quality and yield of the strawberries." Song Lulin, secretary of the village party branch, said, "I didn't expect that this year, this year The price of strawberries in China is so high, and the income of farmers has increased by a quarter compared with last year. First, thanks to the replacement of strawberry varieties, the second is the strengthening of technical force. There are specialized technical personnel and sales consultants in the village to raise seedlings, fertilize, plant, One-stop services such as picking and sales. Third, farmers can sell at a good price in the fields.”

Baskets of strawberries were shipped out of the greenhouse, and the buyers who were waiting on the road in the fields directly weighed, paid, and loaded the trucks. They could walk into the homes of citizens early the next morning and serve them on their dining tables.

Seeing the baskets of strawberries turned into smashing banknotes in the field, Song Lulin couldn't hide his joy: "Before and after the Spring Festival, it is the peak season for the sales of strawberries in greenhouses. Because of the continuous cloudy days in the previous stage, the daily output of strawberries is lower than in previous years. In the past few days, the quality of strawberries has been affected by the rise in temperature, and the shape and sweetness have improved, and the purchase price in the field has also stabilized at about 40 yuan per kilogram. There are more than 1,500 strawberries in 367 households in the village. In greenhouses, the average income of each strawberry greenhouse is more than 40,000 yuan, and some families have five or six greenhouses, and the income is 300,000 yuan.”

When the lights are on, the villagers are wearing headlamps and have been picking strawberries in the greenhouse. Wang Xinlin said, "The merchants haven't left yet. Let's pick them quickly so that the merchants can fill up their carts, earn money, and have a happy New Year."

In the greenhouse, farmers are packing red strawberries into boxes. On the road in the fields, merchants are anxiously waiting for the trucks to be shipped out. When the sun sets, the smell of dumplings permeates the greenhouse.