Agricultural production is the sector most heavily affected by climate change. Therefore, in order to develop agriculture in a balanced manner, ensure food security and protect the environment, in recent times, the agricultural sector, localities and farmers in Quang Tri province have actively and proactively applied science and technology to production, especially smart agricultural models that adapt to climate change. Thereby creating high-quality, high-value products. Some agricultural products of the province have become commodities with a foothold in the domestic and export markets.
All products of Dfarm farm are grown in greenhouses, limiting the effects of weather - Photo: LA
Implementing the project of building improved nurseries to produce high-quality seedlings to serve the raw material area, in the years 2022-2024, the Provincial Agricultural Extension Center has deployed 3 improved nursery models for forestry seedlings at Keo Son Sustainable Forestry Cooperative, Cam Nghia commune, Cam Lo district, Long Thanh nursery, Vinh Ha commune, Vinh Linh district and nursery in Linh Truong commune, Gio Linh district with a scale of 1,000m2 /garden. Of which, the area of tissue culture nursery is 230m2 , tree training garden and auxiliary works are about 770m2 .
Participating in the model, cooperatives and nurseries are supported with seedling nursery frames; automatic light-regulating shading systems; misting and sprinkler irrigation; cutting beds; submerged tanks, improved pumping stations; water and electricity supply systems; and 100,000 tissue-cultured hybrid acacia seedlings along with essential supplies.
Long Thanh nursery owner Vo Long Thanh said that with the improved nursery technology, the overhead shading systems are controlled automatically and semi-automatically; the canopy system protects against rain, wind, humidity, misting, and automatic rain spraying create suitable conditions for growing seedlings. This is the condition for forestry seedlings to develop in the best environment, achieving high quality before being sold to forest growers.
Through monitoring, the rate of successful tissue culture of hybrid acacia seedlings is nearly 100%. On average, each incubation period of about 3 months will produce about 100,000 seedlings, meeting the need for planting about 50 hectares of forest. If produced in a "rolling" manner, the nursery can produce about 800,000-1 million seedlings per year. In particular, compared to cuttings, tissue culture seedlings grow about 20% faster, have a taproot system that is more resistant to storms, and are favorable for large timber plantation models.
The improved nursery model for forestry seedlings was built at Long Thanh Nursery, Vinh Ha commune, Vinh Linh district - Photo: LA
In Vinh Lam commune, Vinh Linh district, while traditional shrimp farming often fails due to the impact of climate change and environmental pollution, high-tech shrimp farming households are still doing well. A typical example is Ms. Cao Thi Thuy in Quang Xa village with a 2-phase intensive white-leg shrimp farming model. With an area of 1 hectare, Ms. Thuy was instructed to use only 0.3 hectare for nursery ponds and farming ponds.
The remaining area is used as a pond to store and treat water. After nearly 4 months of farming, more than 12 tons of commercial shrimp were harvested, equivalent to a yield of 30 tons/ha, with a profit of over 700 million VND. According to Ms. Thuy, with this process, in the first stage, shrimp are stocked in a nursery pond with a density of 500 shrimp/m2. After 1.5 months, the shrimp reach a size of 150-170 shrimp/kg, then they are transferred to a rearing pond with a density of 150-160 shrimp/m2. After 3 months of farming, the shrimp reach a size of 35-40 shrimp/kg, then they can be thinned out to reduce the density and farmed for nearly 1 more month, reaching a size of 25-26 shrimp/kg, then all are harvested.
Ms. Thuy said that the advantage of raising white-leg shrimp according to the 2-phase process is that in phase 1, when the shrimp are first released, this is the stage when the shrimp are very sensitive to environmental factors and diseases. The shrimp are raised in a small, covered nursery pond to help stabilize environmental factors, the shrimp grow well, and the survival rate is high. The nursery pond has a small area, so the cost of environmental treatment chemicals, biological products, minerals, and water pumping is much lower than the traditional farming method.
When moving to phase 2, the exact mass of shrimp to be raised is determined to determine the appropriate amount of feed, avoid excess feed, and reduce the amount of waste discharged into the environment. "In particular, the pond has a large area, so the water source supplied to the nursery and rearing ponds is carefully treated, minimizing the risk of pathogens. Raising according to the water circulation method, the size of the harvested shrimp is large, the yield is much higher than the traditional farming method," Ms. Thuy added.
The concentrated shrimp farming area at Quang Xa Cooperative has a total area of over 23 hectares, of which about 10 hectares apply high-tech shrimp farming according to a 2-3 phase process. According to the assessment of shrimp farming households, the average investment in a floating pond with a roof of 800-1,000 m2 costs from 300-400 million VND depending on the materials used. This is a suitable choice, helping to overcome unfavorable factors in weather and water environment, helping to regulate temperature, especially in the summer, when the weather changes seasons and is hot.
In addition, high-tech intensive shrimp farming also has a large pond system, accounting for about 70% of the shrimp farming area, so the water supply is well treated, ensuring safety, helping to control diseases well.
Head of the Quang Xa Cooperative's shrimp farming team, Hoang Duc Huan, said that in the last shrimp farming season, while traditional farming households faced many difficulties due to weather and disease, high-tech shrimp farming households were profitable. Most of the commune's total harvest in 2024, about 65 tons, came from this high-tech shrimp farming area.
According to Deputy Director of the Department of Agriculture and Rural Development Nguyen Hong Phuong, extreme weather phenomena have been increasing recently, a sign that climate change is becoming increasingly severe.
In Quang Tri, in addition to storms and floods, it also faces extreme heat waves with temperatures higher than 40 degrees Celsius, seriously affecting the productivity and quality of crops and livestock, causing heavy losses to people and, more broadly, affecting economic growth. Faced with these risks and challenges, the agricultural sector has closely coordinated with localities to promote the application of science and technology in work management and implementation of production models in the area.
Thereby turning unfavorable conditions into competitive and development advantages. Strengthening innovation in production organization methods, strongly transforming from agricultural production to agricultural economy on the basis of promoting the application of digital technology such as: artificial intelligence, Internet of Things (IoT), Big Data, drones, cloud computing, sensor technology, automation, biotechnology... Thereby creating high-quality, high-value products; some agricultural products of the province have become commodities with a foothold in the domestic and export markets, contributing significantly to restructuring the industry towards modernity and sustainability such as organic rice, coffee, pepper, medicinal herbs...
The province currently has more than 50 greenhouses and net houses producing safe, high-quality vegetables and fruits with an area of nearly 5 hectares. More than 11,000 hectares of crops use and apply high technology in production organization such as water-saving irrigation, unmanned aerial vehicles, sensor systems, smart pest monitoring, etc.
Some high-tech application models such as DFAM farm in Kim Thach commune, Vinh Linh district has applied Israeli technology in the production of vegetables and fruits in greenhouses; organic orange and grapefruit farm in Khe Muong village, Hai Son commune, Hai Lang district applies water-saving irrigation technology, using biological products to fertilize plants; zero-footprint field model, applying machinery in all stages from land preparation, sowing, care, and harvesting rice in Vinh Linh and Hai Lang districts.
In the livestock sector, there are 135 livestock farms applying high technology, raising livestock in closed barns, automating food, water, disinfection, livestock farm monitoring systems (cameras) connected to the internet and smartphones...
Thanks to that, the total herd of livestock and poultry not only increased in quantity and quality but also the farming method gradually moved towards concentration and industry, associated with ensuring environmental hygiene and food safety.
In the aquaculture sector, there are more than 107 hectares of high-tech shrimp farming; shrimp farming facilities have increased the use of modern machinery and equipment to save time and labor such as: automatic feeding machines, oxygen blowers, oxygen warning machines, power warning machines, and camera systems to monitor the pond area.
Many fishing boats are equipped with transverse detectors to detect schools of fish at sea, reducing time costs and improving fishing efficiency. The development orientation of the agricultural sector is to continue restructuring the agricultural sector, prioritizing the development of high-tech agriculture, adapting to climate change. The main goal is to improve the production and business efficiency of organizations and individuals operating in the agricultural sector to increase income, get rich, and adapt to ecological, climatic and market conditions.
Le An
Source: https://baoquangtri.vn/canh-tac-nong-nghiep-thong-minh-thich-ung-voi-bien-doi-khi-hau-189442.htm
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