Winter Fallow Weeds as a Potential Organic Fertilizer Source for Improving Grain Yield in Rice
文献类型： 外文期刊
作者： Huang, Min 1 ; Chen, Ge 3 ; Kang, Yuling 1 ; Xiao, Zhengwu 1 ; Lv, Wenjie 1 ; Cao, Fangbo 1 ; Chen, Jiana 1 ;
作者机构： 1.Hunan Agr Univ, Key Lab, Minist Educ Crop Physiol & Mol Biol, Rice & Prod Ecophysiol, Changsha 410128, Peoples R China
2.Hunan Agr Univ, Natl Engn Res Ctr Rice, Changsha 410128, Peoples R China
3.Hunan Acad Agr Sci, Hunan Inst Soil & Fertilizer, Changsha 410125, Peoples R China
关键词： Fallow weeds; Grain yield; Organic fertilizer; Rice; Yield attributes
期刊名称：JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION （ 影响因子：3.1； 五年影响因子：3.6 ）
ISSN： 0718-9508
年卷期： 2025 年 25 卷 2 期
页码：
收录情况： SCI
摘要： This study aimed to determine whether the application of winter fallow weeds can improve grain yield in rice (Oryza sativa) and, if so, to identify the key yield attributes and plant traits contributing to the yield improvement. The findings are expected to offer valuable insights into the potential of winter fallow weeds as an organic fertilizer source for rice production. A fixed-field experiment was conducted over four years (2020 - 2023) to investigate the impacts of applying winter fallow weeds (500 g m-2, dry basis) on grain yield, yield attributes, and related plant traits under three nitrogen (N) rates (0, 150, and 225 kg ha-1) in rice. Applying winter fallow weeds increased rice grain yield by 6% across three N rates and four years. The application of fallow weeds led to increases of 6% in panicles per m2, 2% in grain weight, and 9% in total biomass production across various N rates and years. The increase in panicles per m2 was due to a higher number of maximum tillers per m2. The increase in grain weight was linked to a rise in photosynthetic capacity during the grain-filling stage. The increase in total biomass production was attributed to greater intercepted radiation and improved total N uptake. The application of winter fallow weeds has significant yield-increasing effects by improving growth and physiological processes in rice. This study underscores the potential of winter fallow weeds as an organic fertilizer source for improving grain yield in rice.
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