Research into the Mechanical Tillage Regulation Mechanisms of the Soil Structure in Black Soil Paddy Fields

Qiuju Wang, Bingqi Bai, Yuping Liu, Baoguang Wu (), Jingyang Li and Jiahe Zou
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Qiuju Wang: Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China
Bingqi Bai: College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China
Yuping Liu: College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China
Baoguang Wu: College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China
Jingyang Li: Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China
Jiahe Zou: Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China

Agriculture, 2025, vol. 15, issue 11, 1-18

Abstract: This study investigated the impact of the response mechanism of tillage construction on paddy yield in black soil fields by adopting four mechanical tillage techniques, namely, rotary tillage (RT), shallow plowing (SP), deep plowing (DP), and culvert pipe drainage (CD), to solve the problems associated with the reduction in the effective tillage layer in black soil paddy fields, as well as the poor quality and low yield of paddy rice. The results showed that SP, DP, and CD techniques were able to increase the rice yield and improve the effective tillage layer of the soil and the soil structure. Among them, DP had the most obvious effect, compared with traditional RT; the fast-acting N was 37.27 mg/kg higher in the 20–30 cm soil layer, and the soil solid phase decreased by 1.86–3.90% in the soil tripartite ratio. The soil bulk density of DP in the 10–20 cm soil layer decreased by 0.08 g/cm 3 , and, in the 20–30 cm soil layer, it decreased by 0.03 g/cm 3 . These physicochemical properties promoted the development and growth of roots and increased the growth of the root system by 6.53–16.33%, with the yield also increased by up to 9.81%. The CD technique could improve paddy field drainage and increase crop yields. This study combines four mechanical tillage techniques and proposes a mechanism of tillage construction from soil structure improvement to soil physicochemical property enhancement, and then to root system and yield enhancement. This mechanism may help to guide the implementation of mechanical tillage methods in paddy fields, which will provide important insights for future agricultural practices.

Keywords: black soil; soil structure; mechanical tillage; tillage-layer construction; paddy production (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: 2025
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