数字农科院2.0

Crop rotation increases Tibetan barley yield and soil quality on the Tibetan Plateau

文献类型： 外文期刊

作者： Wu, Hui;Liu, Enke;Jin, Tao;Liu, Buchun;Gopalakrishnan, Subramaniam;Zhou, Jie;Shao, Guodong;Mei, Xurong;Delaplace, Pierre;De Clerck, Caroline

作者机构：

关键词： 青稞;;轮作;;产量;;土壤质量

期刊名称： NATURE FOOD

ISSN：

年卷期： 2025 年

页码：

收录情况： SCIE（2025版）

摘要： Tibetan barley (Hordeum vulgare) accounts for over 70% of the total food production in the Tibetan Plateau. However, continuous cropping of Tibetan barley causes soil degradation, reduces soil quality and causes yield decline. Here we explore the benefits of crop rotation with wheat and rape to improve crop yield and soil quality. We conducted 39 field experiments on the Tibetan Plateau, comparing short-term (<= 5 years), 5-10 years and long-term (>= 10 years) continuous cropping with rotation of Tibetan barley with wheat or rape. Results showed that Tibetan barley-wheat and Tibetan barley-rape rotations increased yields by 17% and 12%, respectively, while improving the soil quality index by 11% and 21%, compared with long-term continuous cropping. Both Tibetan barley rotations with wheat and rape improved soil quality and consequently yield, mainly by increasing soil microbial biomass nitrogen and microbial biomass carbon and decreasing pH. By contrast, long-term continuous cropping led to decreased soil organic matter, lower microbial biomass nitrogen and increased pH, contributing to yield decline. The benefits of rotations on crop yield and soil quality increased over time. Implementing crop rotation with wheat or rape thus offers a sustainable agricultural strategy for improving food security on the Tibetan Plateau.

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