Effects of Tillage Methods on Crop Root Growth Trend Based on 3D Modeling Technology

Yanshan Yang, Zhichao Hu (), Fengwei Gu (), Jiangnan Wang and Qishuo Ding
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Yanshan Yang: Nanjing Institute of Agricultural Mechanization Ministry of Agriculture and Rural Affairs, Nanjing 210031, China
Zhichao Hu: Nanjing Institute of Agricultural Mechanization Ministry of Agriculture and Rural Affairs, Nanjing 210031, China
Fengwei Gu: Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100083, China
Jiangnan Wang: Nanjing Institute of Agricultural Mechanization Ministry of Agriculture and Rural Affairs, Nanjing 210031, China
Qishuo Ding: College of Engineering, Nanjing Agricultural University, Nanjing 210031, China

Agriculture, 2022, vol. 12, issue 9, 1-14

Abstract: Strip rotary tillage seeding technology has been widely used in rice–wheat rotation system, benefiting the economy greatly. The purpose of farming is to create a comfortable seedbed environment for crop growth. Therefore, it is necessary to consider the effects of tillage methods on wheat root configuration and growth trend in the research of strip tillage, instead of just focusing on optimizing the shape of tillage tools, sowing methods, and soil fragmentation. To clarify the effects of different tillage methods on crop root growth trends, a two-year wheat planting experiment was carried out. Strip tillage (ST1 and ST2) and full width tillage treatment (FT) were designed, 3D models of root structure and soil on the surface of the seedbed wall were established, and four quantitative indexes were proposed: soil surface roughness of seedbed wall (SR), difference coefficient of root soil space occupation (P), difference coefficient of root angle expansion trend (PA), and difference coefficient of root length expansion trend (PL). The results showed that the cultivation method directly affects the growth trend of wheat roots. The wheat roots tended to grow along the inter-specific direction under ST treatment on the 14th day, and the average P, PA, and PL were as high as 38, 43, and 55, respectively. The SR produced by ST1 treatment was 70% lower than that of ST2 treatment, suggesting ST1 treatment had more serious restrictions on root growth. P, PA, and PL in ST1 treatment were 38.5%, 14%, and 43% higher than those in ST2 treatment within 14 days, respectively. This paper briefly explains the effects of tillage methods on the growth trend of wheat roots, provides new methods and technologies for the rapid and effective acquisition of soil surface information, solved the problem of the trend of root expansion being difficult to quantify, and provided a new direction for the optimization of tillage methods.

Keywords: 3D modeling technology; quantitative index; field in situ test; root architecture; soil roughness; growth trend (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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