秸秆还田与氮肥运筹对寒地水稻光合特性和产量的影响

胡聪聪, 李红宇, 孙显龙, 王童, 赵海成, 范名宇, 张巩亮

Effects of Straw Returning and Nitrogen Fertilizer Management on Photosynthetic Characteristics and Yield of Rice in Cold Region

Hu Congcong, Li Hongyu, Sun Xianlong, Wang Tong, Zhao Haicheng, Fan Mingyu, Zhang Gongliang

表4 剑叶SPAD值的比较

Table 4 Comparison of SPAD values of flag leaves

处理 Treatment 齐穗期Full heading stage 灌浆期Filling stage 2020 2021 平均 Average 2020 2021 平均 Average S1 45.02a 39.35a 42.18a 23.99a 27.52a 25.76a S2 42.97b 38.63b 40.80b 23.26b 26.95b 25.11b N1 42.23b 38.46b 40.34b 22.96b 26.40c 24.68b N2 44.54a 39.53a 42.03a 24.16a 26.98bc 25.57a N3 44.93a 39.02ab 41.97a 23.93ab 28.17a 26.05a N4 44.29a 38.94ab 41.61a 23.46ab 27.41b 25.44a FS 22.39** 5.19* 22.83** 5.03** 5.06* 9.82** FN 7.77** 1.90 7.35** 2.60 8.63** 7.39** FS×N 0.94 0.07 0.59 0.13 1.43 0.64