文献类型： 外文期刊

作者： Dong, Chen Fei ² ; Gu, Hong Ru ² ; Ding, Cheng Long ² ; Xu, Neng Xiang ² ; Liu, NanQing ¹ ; Qu, Hui ¹ ; Shen, Yi Xin ¹ ;

作者机构： 1.Nanjing Agr Univ, Coll Anim Sci & Technol, Nanjing 210095, Jiangsu, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Anim Sci, Nanjing 210014, Jiangsu, Peoples R China

关键词： Nonstructural carbohydrates;Crude protein;Fermentation quality;Rice straw;Panicle weight;Gibberellic acid

期刊名称：FIELD CROPS RESEARCH （ 2020影响因子：5.224； 五年影响因子：6.19 ）

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收录情况： SCI

摘要： This study was to investigate the effects of gibberellic acid (GA) application after anthesis on the feeding value of clouble-purpose (grains as human food and straw as animal roughage) rice (Oryza sativa L.) straw at harvest. Three japonica rice cultivars Huaidao 6, Nanjing 43 and Nanjing 46 in 2009 and Huaidao 6, Nanjing 43 and Yangfujing 8 in 2010 were cultivated in Nanjing under the same management of Jiangsu area. They were sprayed GA with 45 g hm(-2) on the 15th d after anthesis in 2009 and on the 1st, 7th and 15th d after anthesis in 2010. At harvest, the feeding value related traits of rice straw, single panicle weight (PW) and 1000-grain weight were determined in 2 years. The fermentation quality related traits of fresh rice straw silage were determined in 2010. Nonstructural carbohydrates (NSC) and crude protein (CP) contents in rice straw were significantly increased by spraying GA, especially on the 15th d after anthesis, and the fermentation quality of rice straw silage was improved with the increase of NSC and CP contents. PW was also significantly increased by spraying GA after anthesis. The results indicated that spraying GA after anthesis could significantly improve the feeding value of straw and the panicle weight for double-purpose rice. (C) 2012 Elsevier B.V. All rights reserved.