文献类型： 外文期刊

作者： Gao, Yuanyuan ¹ ; Hu, Yongyue ¹ ; Yang, Shuo ³ ; Zhao, Xueguan ³ ; Lu, Shengwei ¹ ; Dou, Hanjie ⁴ ; Zhu, Qingzhen ¹ ; Li, Peiying ⁵ ; Zhu, Yongyun ¹ ;

作者机构： 1.Jiangsu Univ, Sch Agr Engn, Zhenjiang 212013, Peoples R China

2.Minist Educ, Key Lab Modern Agr Equipment & Technol, Zhenjiang 212013, Peoples R China

3.Beijing Acad Agr & Forestry Sci, Informat Technol Res Ctr, Beijing 100097, Peoples R China

4.Penn State Univ, Dept Agr & Biol Engn, University Pk, PA 16802 USA

5.China Agr Univ, Coll Informat & Elect Engn, Beijing 100083, Peoples R China

关键词： conserving cultivation; strip tillage; no-till seeder; seeding quality; seeding depth stability; seed spacing uniformity; parameter control

期刊名称：AGRONOMY-BASEL （ 影响因子：3.4； 五年影响因子：3.8 ）

ISSN：

年卷期： 2025 年 15 卷 8 期

页码：

收录情况： SCI

摘要： Under conservation tillage in the Huang-Huai-Hai wheat-maize rotation area, the ridge-clearing no-till seeder for strip tillage mitigates the adverse impacts of surface residues on seeding quality by clearing stubble specifically within the seed rows, demonstrating significant potential for application and promotion. However, the inadequate understanding of the seeder's operational performance and governing mechanisms under varying field conditions hinders its high-quality and efficient implementation. To address this issue, this study selected the stubble height, forward speed, and stubble knife rotational speed (PTO speed) as experimental factors. Employing a three-factor quasi-level orthogonal experimental design, coupled with response surface regression analysis, this research systematically elucidated the interaction mechanisms among these factors concerning the seeding depth consistency and seed spacing uniformity of the seeder. An optimized parameter-matching model was subsequently derived through equation system solving. Field trials demonstrated that a lower forward speed improved the seed spacing uniformity and seeding depth consistency, whereas high speeds increased the missing rates and spacing deviations. An appropriate stubble height enhanced the seed spacing accuracy, but an excessive height compromised depth precision. Higher PTO speeds reduced multiple indices but impaired depth accuracy. Response surface analysis based on the regression models demonstrated that the peak value of the seed spacing qualification index occurred within the forward speed range of 8-9 km/h and the stubble height range of 280-330 mm, with the stubble height being the dominant factor. Similarly, the peak value of the seeding depth qualification index occurred within the stubble height range of 300-350 mm and the forward speed range of 7.5-9 km/h, with the forward speed as the primary factor. Validation confirmed that combining stubble heights of 300-330 mm, forward speeds of 8-9 km/h, and PTO speeds of 540 r/min optimized both metrics. This research reveals nonlinear coupling relationships between operational parameters and seeding quality metrics, establishes a stubble-speed dynamic matching model, and provides a theoretical foundation for the intelligent control of seeders in conservation tillage systems.