China boasts a vast inventory of agricultural machinery. By the end of 2024, the national tractor fleet will have reached 22 million units, but over 40% of these are old equipment, over eight years old. These aging tractors commonly suffer from high fuel consumption, frequent breakdowns, and substandard emissions, increasing farmers' operating costs and failing to meet environmental standards. Recently, several regions have launched "revitalization projects" for older tractors. Through a combination of energy-saving renovations and intelligent upgrades, these projects are giving older equipment a "new lease of life," reducing farmers' replacement costs and promoting resource recycling.
At an agricultural machinery repair and renovation base in Shijiazhuang, Hebei, a 10-year-old 50-horsepower tractor is undergoing a renovation. Maintenance personnel first disassembled and overhauled the engine, replacing severely worn pistons, valves, and other components. They also installed a fuel atomization optimization device, which improves fuel combustion efficiency by 15%. The renovation reduced the tractor's fuel consumption per acre from 8 liters to 6.8 liters, saving approximately 2,000 yuan in fuel costs annually. Maintenance personnel also replaced the tractors with exhaust treatment systems that meet China IV emission standards, reducing nitrogen oxide emissions by 30% and particulate matter emissions by 50%, meeting the latest environmental standards.

In addition to energy-saving upgrades, intelligent upgrades are another core component of the "Renewal Project." The retrofitted tractors will be equipped with simple smart terminals that record operating data, provide fault warnings, and enable location tracking. Farmers can use a mobile app to view real-time data such as the tractor's operating hours, operating area, and fuel consumption, accurately calculating per-acre operating costs. If a malfunction occurs, the terminal automatically sends an alert and provides contact information for nearby repair centers. Zhang Jianjun, a farmer in Nanyang, Henan, has been using his tractor for nine years and had frequently broken down. The upgrade not only reduced fuel consumption but also provided early warning of malfunctions. "During last year's autumn harvest, the app indicated that the engine temperature was too high. Prompt repairs averted a major malfunction, which would have delayed the harvest and caused significant losses."
To promote the "Renewal Project," the local government has introduced several supporting policies. Shandong, Anhui, and other provinces offer farmers participating in the renovation program a subsidy of 5,000 to 8,000 yuan per tractor, covering 60% of the renovation costs. Agricultural machinery repair companies are also encouraged to collaborate with financial institutions to provide farmers with installment payments for renovation costs, alleviating their financial burden. Furthermore, agricultural departments have established a quality traceability system for renovated equipment, conducting one-year follow-up monitoring of renovated tractors to ensure their effectiveness.
According to statistics, 20 provinces across China have already implemented renovations for older tractors, with a cumulative total of over 50,000 units renovated, extending the service life of each unit by an average of more than five years. This program reduces fuel consumption by 12,000 tons and reduces exhaust emissions by 4,000 tons annually. This program not only saves farmers the high cost of replacing new equipment but also promotes the recycling of older agricultural machinery, providing new ideas for green agricultural development.
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