Accurately identifying the stage boundaries and characteristic attributes of agricultural mechanization development is a logical prerequisite for following objective laws and promoting the high-quality development of the industry. This paper took the phased laws of social and economic form evolution as the theoretical foundation of Marxist historical materialism, combined the discussion on the particularity of phased contradictions in On Contradiction, and based on the division standards of agricultural mechanization development stages established in NY/T 1408.1—2007 Evaluation of Agricultural Mechanization Level-Part 1: Crop Cultivation it conducted a systematic stage division and characteristic decomposition of China's 77-year development process of agricultural mechanization from 1949 to 2025, from the two dimensions of production mode transformation and employment structure transformation. The research findings indicated that China's agricultural mechanization had successively gone through the primary stage (from 1949 to 2006), characterized by a focus on the modularization, and the intermediate stage (from 2007 to 2025), characterized by a focus on the full-processization. Currently, it was in a critical transitional period as it was moving towards the advanced stage. The primary stage presented the basic attributes of traditional production methods dominating, partial penetration of mechanization, and a relatively low development rate. The employment structure experienced a historical turning point from "increasing machines and increasing people" to "increasing machines and reducing people". The intermediate stage, driven by institutional supply and policy dividends, achieved a historic leap in the full-process mechanization of major crop production. Mechanized production methods established a dominant position, and the total power of agricultural machinery, the comprehensive production capacity of grain, and agricultural labor productivity all achieved a quantitative leap. The social employment structure completed a fundamental reconfiguration from "one, three, two" to "three, two, one". The advanced stage would be characterized by comprehensive, intelligent, and green as its core indicators, pointing to the coverage of agricultural mechanization in all fields and all links and the empowerment of new quality productive forces in industrial upgrading. This paper verified the scientificity and applicability of the division criteria for the stages of agricultural mechanization, clarifies the historical position that China's agricultural mechanization was about to enter the advanced stage, and could provide theoretical support and decision-making basis for the high-quality development of agricultural machinery equipment in the "15th Five-Year Plan" period and the selection of the path for building an agricultural power.

To address large seasonal temperature differences, heavy grid dependence, and manual decision-making in solar greenhouses in Shanxi Province, this study designed an intelligent temperature and humidity control system based on the NY/T 3744-2020 standard and fruit vegetable growth requirements. The system integrated Fresnel lens high-concentration photovoltaic (CPV) technology, using PV power, a charge/discharge controller, and a battery to drive fans, film rollers, and supplemental lights. The control strategy combines PID control, threshold decision-making, and battery protection rules. MATLAB dynamic simulations under typical spring and summer weather conditions (using tomatoes as an example) showed that the system achieved the required temperature and humidity control accuracy, daily power generation meets the full-day load demand, and the battery remains in a safe operating state.

This paper explored the influence mechanism of the density, stiffness, damping, and acoustic properties of impeller materials on the vibration and noise of pumps. Combined with the measured data from typical pumping stations in hydropower engineering, the vibration and noise performance of pumps with different material impellers was analyzed, providing a theoretical basis for pump noise reduction design and material selection.

Using the Passiflora edulis 'Golden' variety Qinguo No.9 as the object, the "Digital and Intelligent Farming" smart agriculture management system was designed. This system realized core functional modules such as real-time display of all elements of agricultural production activities, planting recommendations, production management, intelligent monitoring, and human-computer interaction assistants. Through multi-scenario field tests, the system could save 20% to 28% of irrigation water in the field, reduce fertilizer application by 18% to 26%, and increase crop yield by 15% to 25%.

To address the problems of scattered data, cumbersome processes, and delayed decision-making in traditional agricultural management, this paper designed and implemented a data acquisition and farm work management system for the crop growth cycle based on Web technology. By integrating and managing multi-dimensional information such as user data, crop information, growth records, and environmental data, the system achieves full-process digital tracking from crop planting to harvest. The system adopted a B/S (Browser/Server) architecture and provided nine core functional modules, including data acquisition, intelligent query, warning management, and statistical analysis. Test results showed that the system was easy to operate, functionally complete, and could effectively improve the standardization and informatization level of farmland management.

At present, there is a problem of "emphasizing construction but neglecting management" in the construction of high-standard farmland in our country. The irrigation methods are still rather simplistic, and the mechanization level is relatively low. To address these issues, this paper proposed a three-layer architecture of "cloud-system-terminal", elaborated on the specific implementation paths of the perception layer, transmission layer and application layer, analyzed the methods of heterogeneous network integration, hardware equipment selection and system integration, and discussed the construction and operation maintenance models in combination with practice. The results showed that this system could control water and fertilizer very accurately, save a lot of labor, and provide a reference model for agricultural informatization construction.

The improvement of motion control precision in agricultural irrigation robots is a key technology for achieving precision agriculture. By constructing a multi-sensor fusion positioning control system and an improved PID motion control algorithm, combined with path planning optimization and dynamic error compensation mechanisms, the robot's operational performance has been significantly enhanced. The Extended Kalman Filter algorithm realizes the fusion of multi-source information from GPS and IMU, while the adaptive PID controller improves system response characteristics. Experimental results showed that positioning accuracy improved from ±15.2 cm to ±3.1 cm, trajectory tracking accuracy reached ±2.5 cm, irrigation uniformity coefficient reached 92.5%, and system stability index reached 0.91.

The typical maize-growing area in Tancheng was selected as the experimental area, and traditional round rollers, multi-angled rollers, and rigid-flexible coupled rollers were selected for field comparative experiments. The results showed that the rigid-flexible coupled roller performed better in reducing the grain breakage rate, drop rate, and improving the fruit ear integrity rate, and had certain advantages in energy consumption control and operation efficiency. The results of orthogonal experiments and variance analysis indicated that the roller speed and roller gap had significant effects on the loss reduction effect, with the optimal combination being a roller speed of 950 r/min and a roller gap of 30 mm. The mechanism analysis showed that the flexible buffer layer could effectively disperse the impact force, improve the force state of the fruit ear, and thereby reduce the risk of grain damage. This study provided theoretical basis and practical reference for the structural optimization and parameter matching of the ear-threshing device of maize harvesters.

This paper introduced the principles, characteristics and advantages of mechanized deep plowing technology, and sorted out the practical obstacles that prevented farmers from adopting this technology. It also analyzed the shortcomings of the current support system in aspects such as subsidy distribution, supporting services, and supervision and publicity, and proposed improvement measures from dimensions such as differentiated subsidy design, agricultural technology support guarantee, and publicity and training, with the aim of optimizing the promotion system of deep plowing technology and facilitating soil conservation and the green and sustainable development of agriculture.

Infrared camera technology, with its non-invasive, all-weather, and wide-range monitoring characteristics, has become a key technical support for wildlife disease prevention and control in forest and grassland areas. This paper first explained the principles and advantages of infrared camera technology, systematically reviewed its specific applications in wildlife disease monitoring, and evaluated the effectiveness of application through practical cases in typical forest and grassland areas. It provided theoretical references and practical basis for precise monitoring, risk early warning, and ecological security guarantee of wildlife diseases in forest and grassland areas.