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Yield and Resource Utilization Efficiency Gap in Early Maturing Japonica Rice Cultivars under Different Management Strategies—A Different Location Investigation

Author

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  • Yandong Lv

    (College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China
    Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Heilongjiang Bayi Agricultural University, Daqing 163319, China
    These authors contributed equally to this work.)

  • Yue Hu

    (Heilongjiang Agricultural Economy Vocational College, Mudanjiang 157041, China
    These authors contributed equally to this work.)

  • Fujing Sun

    (Qingdao Pony Test Co., Ltd., Qingdao 266104, China)

  • Wanyue Huo

    (College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China
    Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Heilongjiang Bayi Agricultural University, Daqing 163319, China)

  • Hongyu Li

    (College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China
    Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Heilongjiang Bayi Agricultural University, Daqing 163319, China)

  • Lihua Liu

    (College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China
    Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Heilongjiang Bayi Agricultural University, Daqing 163319, China)

  • Dawei Yin

    (College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China
    Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Heilongjiang Bayi Agricultural University, Daqing 163319, China)

  • Guiping Zheng

    (College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China
    Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Heilongjiang Bayi Agricultural University, Daqing 163319, China)

  • Xiaohong Guo

    (College of Agriculture, Heilongjiang Bayi Agricultural University, Daqing 163319, China
    Key Laboratory of Modern Agricultural Cultivation and Crop Germplasm Improvement of Heilongjiang Province, Heilongjiang Bayi Agricultural University, Daqing 163319, China)

Abstract

High input costs and poor management options have resulted in a large rice yield gap. Thus, there is a need to reduce production costs and improve resource-use efficiency by using new cultivation techniques at different locations. The objective of this study was to determine yield and utilization efficiency gaps in early maturing japonica rice under four treatments; no nitrogen application (N0), local farmer practice (FP), high-yield, high-efficiency practice (HYP), and super-high-yield practice (SHY). The average yields under N0, FP, HYP, and SHY were 5012, 7356, 8448, and 9629 kg ha − 1 , respectively. Differences among treatments were as: N0 to FP (gap 1); FP to HYP (gap 2); and HYP to SHY (gap 3). Yield gaps 1, 2, and 3 were 2337, 1092, and 1181 kg ha − 1 , respectively. Yield gap was positively associated with panicles per square meter. Yield under HYP and SHY was 14.8% and 30.9% higher than that under FP, respectively. This increase in yield was mainly associated with a higher number of panicles. For resources, gaps 1, 2, and 3 were as follows: water-use efficiency, 0.1706, 0.1513, and 0.1089 kg m − 3 ; radiation-use efficiency, 0.3285%, 0.1780%, and 0.0941%; and heat-use efficiency, 1.8685, 1.0339, and 0.8798 kg °C − 1 d − 1 ha − 1 , respectively. The yield was positively correlated with water, radiation, and heat-use efficiencies. The differences in yield and resource-use efficiency were significant between sites. A reduction in yield and efficiency gaps can ensure sufficient panicle per square meter, stabilize grain number per panicle, and increase harvest index and biomass. Overall, HYP is a promising option to increase the yield of early maturing japonica rice yield in cold regions.

Suggested Citation

  • Yandong Lv & Yue Hu & Fujing Sun & Wanyue Huo & Hongyu Li & Lihua Liu & Dawei Yin & Guiping Zheng & Xiaohong Guo, 2022. "Yield and Resource Utilization Efficiency Gap in Early Maturing Japonica Rice Cultivars under Different Management Strategies—A Different Location Investigation," Agriculture, MDPI, vol. 12(7), pages 1-15, July.
    • Handle: RePEc:gam:jagris:v:12:y:2022:i:7:p:1010-:d:861064
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    References listed on IDEAS

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    1. Nanyan Deng & Patricio Grassini & Haishun Yang & Jianliang Huang & Kenneth G. Cassman & Shaobing Peng, 2019. "Closing yield gaps for rice self-sufficiency in China," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
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