硅藻土对水稻产量和氮肥利用率的影响

曾茜倩, 张振远, 马秀娥, 方映涵, 翟金磊, 金涛, 刘冬, 刘章勇

Effects of Diatomite Application on Yield and Nitrogen Use Efficiency of Rice

Zeng Qianqian, Zhang Zhenyuan, Ma Xiue, Fang Yinghan, Zhai Jinlei, Jin Tao, Liu Dong, Liu Zhangyong

表3 2021-2022不同处理对水稻氮肥利用率的影响

Table 3 Effects of different treatments on nitrogen utilization efficiency of rice from 2021 to 2022

年份 Year 处理 Treatment 氮素总吸收量 Total nitrogen uptake 氮肥吸收利用率 N recovery efficiency (%) 氮肥农学利用率 N agronomic efficiency (kg/kg) 氮肥生理利用率 N physiological utilization efficiency (kg/kg) 氮肥偏生产力 N partial factor productivity (kg/kg) 氮素收获指数 N harvest index (%) 2021 CK 66.49±1.73d 70.92±0.24a Si 105.87±2.62c 60.45±0.17b N 136.50±1.49b 38.89±0.77b 13.74±0.32b 35.36±0.75b 49.75±0.44b 55.50±0.33c N+Si 162.55±1.32a 53.36±0.48a 21.07±0.49a 40.72±1.11a 58.31±0.55a 53.00±0.21d 2022 CK 44.78±1.01d 58.45±0.39a Si 69.06±2.66c 57.26±0.41b N 107.73±2.28b 34.97±0.79b 17.39±0.18b 48.67±0.59b 47.89±0.64b 50.70±0.27c N+Si 132.37±1.99a 48.66±0.74a 28.88±0.29a 56.31±1.31a 57.90±0.74a 46.71±0.23d 差异分析Analysis of variance 年份Years (Y) ** ** ** ** ns ** 氮Nitrogen (N) ** ns ns ns ns ** 硅藻土Diatomite (Si) ** ** ** ** ** ** 年份×氮Y×N ns ns ns ns ns ** 年份×硅藻土Y×Si ** ns ** ns ns ** 氮×硅藻土N×Si ** ns ns ns ns ** 年份×氮×硅藻土Y×N×Si ** ns ns ns ns **