Management of rice straw with relay cropping of Chinese milk vetch improved double-rice cropping system production in southern China

作     者：ZHOU Xing LIAO Yu-lin LU Yan-hong Robert MREES CAO Wei-dong NIE Jun LI Mei ZHOU Xing;LIAO Yu-lin;LU Yan-hong;Robert M. REES;CAO Wei-dong;NIE Jun;LI Mei

作者机构：Crop Research InstituteHunan Academy of Agricultural SciencesChangsha 410125P.R.China Soil and Fertilizer Institute of Hunan ProvinceHunan Academy of Agricultural SciencesChangsha 410125P.R.China Scientific Observing and Experimental Station of Arable Land Conservation(Hunan)Ministry of Agriculture and Rural AffairsChangsha 410125P.R.China Scotland’s Rural CollegeEdinburgh EH93JGUK Key Laboratory of Plant Nutrition and FertilizerMinistry of Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081P.R.China 

出 版 物：《Journal of Integrative Agriculture》 (农业科学学报（英文版）)

年 卷 期：2020年第19卷第8期

页      面：2103-2115页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 

基　　金：supported by the earmarked fund of China Agriculture Research System(CARS-22) the Key R&D Projects in Hunan Province,China(2017NK2051) the National Key R&D Program of China(2017YFD0301504 and 2018YFD03006) the Hunan Agricultural Science and Technology Innovation Fund Project,China(2018zd06) 

主　　题：double-rice cropping system Chinese milk vetch biomass productivity rice straw sustainable yield index 

摘      要：Improved utilization of rice(Oryza sativa L.)straw and Chinese milk vetch(Astragalus sinicus L.,vetch)has positive effects on rice *** far,few studies have investigated the productivity of vetch under different residue management practices in double-rice cropping *** effects of rice straw on the growth and nutrient accumulation of vetch across seven years(2011–2017)and the subsequent effects of rice straw and vetch on two succeeding rice crops in a vetch–rice–rice cropping system,with the vetch established by relay cropping,were *** seven-year double-rice experiment consisted of the following treatments:(1)100%chemical fertilizer(F-F100);(2)only vetch without chemical fertilizer(M-Con);(3)80%chemical fertilizer plus vetch plus a low-cutting height(low-retained stubble)with the removal of straw(M-F80);(4)80%chemical fertilizer plus vetch plus a low-cutting height with the retention of straw(M-F80-LR);(5)80%chemical fertilizer plus vetch plus a high-cutting height(high-retained stubble)with the retention of straw(M-F80-HR);and(6)no fertilizer(F-Con).The yields of the two rice crops after vetch were not affected by either the cutting height of stubble with retention of straw or by the management of straw(retention ***)with low-cutting height of *** yields of the two rice crops after vetch were significantly higher for M-F80-HR than for M-F80-LR,but the relative contributions of the high-cutting height and straw retention to the higher rice yield could not be determined in this *** yield stability of the double-rice grain in M-F80-HR was also increased,as determined by a sustainable yield *** increases in vetch biomass and nutrient uptake were observed in the fertilized treatments during the rice season compared with the unfertilized *** M-F80-HR plots,improvements in the growing environment of the vetch by conserving soil water content were associated with the highest vetch biomass,nutrient uptake,a