江西农业学报2026，Vol.38Issue(3)：1-9,9.DOI:10.19386/j.cnki.jxnyxb.2026.03.001
紫云英还田与化肥减量配施对水稻养分吸收、转运的影响
Effects of Chinese Milk Vetch Incorporation and Chemical Fertilizer Reduction on Nutrient Absorption and Transport in Rice
摘要
Abstract
In order to clarify the Chinese milk vetch(Astragalus sinicus L.)incorporation amount in the Chinese milk vetch-rice rotation model and screen out efficient and low-carbon fertilization methods in the southern Henan rice region,six treatments were set up,namely,the non-fertilization control(CK),conventional fertilization(F100),and treatments with Chinese milk vetch incorporation amounts of 22.5 t/hm2,30.0 t/hm2,37.5 t/hm2 and 45.0 t/hm2 under 40%nitrogen fertilizer reduction(designated as G1.5F60,G2F60,G2.5F60 and G3F60 in sequence).The rice biomass,rice above-ground dry matter accumulation,transport of nitrogen,phosphorus and potassium and nutrient use efficiency at different stages were analyzed.The results showed that compared with the F100 treatment,the nitrogen accumulation in the above-ground parts of chemical fertilizer reduction treatments significantly increased by 52.43%～124.16% and 48.11%～83.03% at the heading stage and maturity stage,respectively.Among them,the nitrogen accumulation in straw significantly increased by 58.69%～144.34% and 84.40%～160.65%respectively.The nitrogen accumulation of grains at the maturity stage increased significantly by 28.25%to 46.96%.The phosphorus absorption of straw at the maturity stage significantly increased by 72.08% to 157.47%.Compared with F100 treatment,G2.5F60 and G3F60 significantly increased the potassium absorption of rice straw at the heading stage and the maturity stage,with the increase of 31.45%,52.61%,30.00% and 36.42% respectively.Compared with the F100 treatment,the nitrogen and phosphorus transport capacity of rice in the G3F60 treatment increased significantly by 206.40% and 113.78% respectively.The contribution rate of phosphorus to rice transport increased significantly by 82.11 percentage points.The agronomic utilization efficiency of nitrogen,phosphorus and potassium in the G3F60 treatment was significantly lower than that in the F100 treatment,with the decrease of 49.39%,55.76% and 42.44% respectively.The nitrogen recovery rate of each treatment with reduced chemical fertilizer application of Chinese milk vetch increased significantly,with an increase rate ranging from 40.00 to 62.22 percentage points.The potassium recovery and utilization rate of each treatment with G2.5F60 and G3F60 increased significantly,with the increase of 43.19 and 43.89 percentage points.Correlation analysis revealed that rice yield had positive correlations with nitrogen,phosphorus,and potassium absorption at each growth stage(r=0.290～0.847*),and had negative correlations with the transfer capacity of nitrogen and potassium at the maturity stage(r=-0.067,-0.975**).Comprehensively considering factors such as yield,nutrient absorption and fertilizer utilization rate,the treatment of Chinese milk vetch with application of 37.5 t/hm2 can promote the nutrient absorption of nitrogen,phosphorus and potassium in rice compared with the F100 treatment,maintain a comparable nutrient transfer capacity to conventional fertilization,and increase the above-ground absorption of nitrogen,phosphorus and potassium during the vegetative growth period,thereby achieving high and stable rice yield.关键词
紫云英/水稻/化肥/养分利用效率/养分吸收转运Key words
Chinese milk vetch/Rice/Chemical fertilizer/Nutrient use efficiency/Nutrient absorption and transport分类
农业科技引用本文复制引用
吕玉虎,钟思志,程捷,杨豪宇,张琳,丁丽,杜光辉,刘克,李玉章,张开栋..紫云英还田与化肥减量配施对水稻养分吸收、转运的影响[J].江西农业学报,2026,38(3):1-9,9.基金项目
现代农业产业技术体系建设专项资金(绿肥,CARS-22). （绿肥,CARS-22）
