秸秆还田下氮肥减量对辽河平原水稻产量及氮素利用的影响

金丹丹, 隋世江, 陈玥, 李波, 曲航, 宫亮

Effects of Straw Returning with Nitrogen Application Reduction on Yield and Nitrogen Utilization of Rice in Liaohe Plain

Jin Dandan, Sui Shijiang, Chen Yue, Li Bo, Qu Hang, Gong Liang

表2 秸秆还田耦合减量施氮对水稻地上部生物量的影响

Table 2 Effect of straw returning with nitrogen application reduction on aboveground biomass in rice t/hm2

处理 Treatment 拔节期Jointing stage 抽穗期Heading stage 成熟期Maturing stage 叶片+茎鞘Leaf+stem-sheath 叶片+茎鞘Leaf+stem-sheath 穗Panicle 叶片+茎鞘Leaf+stem-sheath 穗Panicle CK 1.41±0.09c 2.91±0.67c 0.71±0.04d 3.14±0.30b 6.23±0.33c N210-N 2.78±0.40b 5.18±0.90b 1.33±0.08c 5.12±0.63a 10.75±0.49b N210-M 3.77±0.19a 6.37±0.39ab 1.68±0.11a 5.15±0.92a 11.46±1.41ab N210-G 3.00±0.14ab 6.29±0.38ab 1.53±0.04abc 5.82±0.44a 13.33±0.81a N260-N 2.59±0.51b 6.76±0.23ab 1.42±0.16bc 6.40±0.96a 11.16±0.50ab N260-M 3.79±0.59a 7.58±0.57a 1.74±0.14a 5.36±0.54a 11.70±0.09ab N260-G 3.28±0.70ab 7.54±1.70a 1.65±0.20ab 5.08±0.64a 12.26±2.03ab