杂交水稻2026，Vol.41Issue(2)：48-59,12.DOI:10.16267/j.cnki.1005-3956.20250518.107
施氮量和氮磷钾配比对小粒型杂交稻卓两优0985产量构成及养分吸收利用的影响
Effects of Nitrogen Application Rate and Nitrogen-Phosphorus-Potassium Ratio on Yield Components and Nutrient Absorption and Utilization of Small-grain Hybrid Rice Zhuoliangyou 0985
摘要
Abstract
This study aims to explore the effects of nitrogen(N)application rate and N-phosphorus(P)-potassium(K)(NPK)ratio on the yield components and nutrient absorption and utilization of small-grain hybrid rice.A field experiment was carried out with the small-grain hybrid rice Zhuoliangyou 0985 as material under four N application rates(N1 120 kg/hm2,N2 150 kg/hm2,N3 180 kg/hm2,N4 210 kg/hm2)and three NPK ratios(F1 1:0.5:0.8,F2 1:0.5:1,F3 1:1:1).The results showed that with the increase in N application rate,the yield of Zhuoliangyou 0985 first increased and then decreased.The actual yield of N3 treatment increased significantly by 5.88％～7.47％and 11.05％～17.27％compared with those of N1 and N2 treatments,respectively,while there was no significant difference between N3 and N4 treatments.The actual yield of F2 treatment was slightly higher among different NPK ratio treatments.The actual yields of N3F1 and N3F2 were higher among the interaction treatments.The increase in N application rate helped to improve the total absorption amounts of N,P,and K in Zhuoliangyou 0985,while it reduced the absorption efficiency,utilization efficiency,and partial productivity of N,P,and K and the harvest indices of N and K.The NPK ratio mainly affected the total absorption amounts of P and K and the absorption efficiency of P.The correlation analysis showed that the yield of Zhuoliangyou 0985 had significantly or extremely significantly positive correlations with the number of effective panicles and the total number of grains per panicle,extremely significantly positive correlations with the total absorption amounts of N and K,an extremely significantly negative correlation with the absorption efficiency of N,and significantly or extremely significantly negative correlations with the harvest indices of N and K.Considering the characteristics of yield and nutrient absorption and utilization,the N3F1 treatment(N application rate of 180 kg/hm2 and NPK ratio of 1:0.5:0.8)was the best for the small-grain hybrid rice Zhuoliangyou 0985.关键词
小粒型杂交稻/施氮量/氮磷钾配比/产量/养分吸收利用Key words
small-grain hybrid rice/nitrogen application rate/nitrogen-phosphorus-potassium ratio/yield/nutrient absorption and utilization分类
农业科技引用本文复制引用
潘群肖,卓乐,龙超,殷超,唐文帮,周文新,易镇邪..施氮量和氮磷钾配比对小粒型杂交稻卓两优0985产量构成及养分吸收利用的影响[J].杂交水稻,2026,41(2):48-59,12.基金项目
国家重点研发计划项目(2023YFD2301402) （2023YFD2301402）
湖南省农业农村厅项目(湘农办发[2023]38号,湘农办发[2024]27号) （湘农办发[2023]38号,湘农办发[2024]27号）
