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Diversified Crop Rotations Reduce Groundwater Use and Enhance System Resilience by Shiquan Wang; Jinran Xiong; Boyuan Yang; Xiaolin Yang; Taisheng Du; Tammo S. Steenhuis; Kadambot H.M. Siddique; Shaozhong Kang is a Agricultural and Biological Sciences article available to read on EtoBox.

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Agricultural intensification has increased crop productivity but simplified production and reduced cropping system diversity. In recent decades, the intensified wheat–maize rotation in the North China Plain has sharply decreased the groundwater table, with associated environmental and biodiversity issues. Understanding whether increasing cropping system diversity stabilizes productivity, improves resilience, and reduces adverse environmental impacts is critical. This study quantified the water requirements of nine staple crops from 1960 to 2020, established 15 alternative crop rotations, and evaluated the resilience of each rotation in the Cangzhou area, a typical groundwater deletion funnel area. The results showed that reducing cropping density (harvests per year) from 2 to 1.5 decreased the average annual water requirement and irrigation demand by 14 % and 33 %, respectively. Summer soybean alternated with maize and rotated with wheat did not reduce groundwater use but increased profitability and protein production. Spring mung bean–summer millet-based multi-rotations had higher precipitation coupling degrees (8 % in wet years, 17 % in normal years, and 56 % in dry years) and pr

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Author

Shiquan Wang; Jinran Xiong; Boyuan Yang; Xiaolin Yang; Taisheng Du; Tammo S. Steenhuis; Kadambot H.M. Siddique; Shaozhong Kang

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Agricultural and Biological Sciences (Physical Sciences)