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Yield and quality properties of silage maize and their influencing factors in China

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Abstract

Silage maize (Zea mays L.) is one of the most important forages in the world, and its yield and quality properties are critical parameters for livestock production and assessment of forage values. However, relationships between its yield and quality properties and the controlling factors are not well documented. In this study, we collected 5,663 observations from 196 publications across the country to identify the relationships between yield and quality properties of silage maize and to assess the impact of management practices and climatic factors on its yield and quality in China. The average dry matter yield of silage maize was (19.98±6.93) Mg ha−1, and the average value of crude protein, ether extract, crude ash, crude fiber, acid detergent fiber, neutral detergent fiber, nitrogen-free extract, and relative feed value was 7.86%±1.71%, 2.53%±1.01%, 5.05%±1.66%, 23.97%±6.34%, 27.62%±7.12%, 51.60%±9.85%, 59.68%±7.72%, and 131.17±31.49, respectively. In general, its nutritive value decreased as its yield increased. Increasing planting density could increase the yield but inhibit the nutritive values, while increasing fertilization could benefit the nutritive values. Geographically, the yield increased and the nutritive value decreased from warm (south) to cold (north) regions. The length of growth duration was a major controlling factor for the patterns of these properties. Our findings provide insights for police-makers to make strategy for achieving high yield and good quality of silage maize and help local people to implement better management practices.

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Acknowledgements

This work was supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (XDA26010303) and Science and Technology Services (STS) Network Program of Chinese Academy of Sciences (KFJ-STS-ZDTP-056).

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Authors and Affiliations

  1. State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China

    Mengying Zhao, Yinping Feng, Yue Shi, Haihua Shen, Huifeng Hu, Yongkai Luo, Longchao Xu, Jie Kang, Aijun Xing & Jingyun Fang

  2. University of Chinese Academy of Sciences, Beijing, 100049, China

    Mengying Zhao, Yinping Feng, Yue Shi, Haihua Shen, Jie Kang & Aijun Xing

  3. College of Urban and Environmental Sciences, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing, 100871, China

    Shaopeng Wang & Jingyun Fang

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  1. Mengying Zhao
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Zhao, M., Feng, Y., Shi, Y. et al. Yield and quality properties of silage maize and their influencing factors in China. Sci. China Life Sci. 65, 1655–1666 (2022). https://doi.org/10.1007/s11427-020-2023-3

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