Comparative study on resource utilization and comprehensive benefit of typical rice planting patterns in middle reaches of Yangtze River
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Research Center on Ecological Sciences,Jiangxi Agricultural University/ Key Laboratory of Crop Physiology,Ecology and Genetic Breeding of Jiangxi Province,Nanchang 330045,China

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S344;S38

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    Abstract:

    In order to explore the comprehensive benefits of different planting patterns in paddy fields in the middle reaches of the Yangtze River and screen the efficient planting patterns suitable for the middle reaches of the Yangtze River,five typical planting patterns in the middle reaches of the Yangtze River were selected.The resource utilization and comprehensive benefits of typical planting patterns in the middle reaches of the Yangtze River were compared through two consecutive years of field experiments.The results showed that in two years,the annual total light energy utilization rate of each treatments were higher than that of the control treatment,except the treatment RRR in 2020.The annual total light energy utilization rate of each treatments were significantly higher than that of the control treatment 10.98%-35.37% and 22.22%-50.00%.In two years,the anniversary of light energy and annual total light energy utilization efficiency under the treatment of RRI were higher,the second is treatment of CRI.During two years,the annual accumulated temperature production efficiency of the other three treatments were significantly higher than that of the control 8.28%-25.44% (2019) and 21.09%-26.78% (2020),except for the treatment of CRI.The effective accumulated temperature of utilization rate under the models of winter milk vetch were higher,the treatments of CRI and CRR have good performance,improve the utilization rate of accumulated temperature.For consecutive two years,comprehensive benefit weighted correlation degree under the treatment of CRI was 0.75 and 0.81 respectively,the comprehensive benefit was optimal.To sum up,in consideration of high yield,low greenhouse gas emissions,high soil quality,high resource utilization efficiency and the most optimal comprehensive benefit,the model of Chinese milk vetch-early rice-sweet potato||late soybean had good performance,which played an important role in the optimization of paddy planting pattern in the middle reaches of the Yangtze River.

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杨滨娟,袁嘉欣,胡启良,刘宁,黄瑶,黄国勤. Comparative study on resource utilization and comprehensive benefit of typical rice planting patterns in middle reaches of Yangtze River[J]. Jorunal of Huazhong Agricultural University,2022,41(6):79-88.

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History
  • Received:April 08,2022
  • Revised:
  • Adopted:
  • Online: December 09,2022
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