控释尿素对寒地水稻农艺性状、产量及氮肥利用率的影响

姬景红, 刘双全, 马星竹, 郝小雨, 郑雨, 赵月, 王晓军, 匡恩俊

Effects of Different Controlled-Release Urea on Agronomic Traits, Yield and Nitrogen Use Efficiency of Cold Region Rice

Ji Jinghong, Liu Shuangquan, Ma Xingzhu, Hao Xiaoyu, Zheng Yu, Zhao Yue, Wang Xiaojun, Kuang Enjun

表3 不同处理下水稻吸氮量和氮肥利用率

Table 3 Nitrogen uptake and nitrogen use efficiency of rice under different treatments

地点 Site 处理 Treatment 植株吸氮量Nitrogen absorbing amount by plants (kg/hm2) 氮肥利用率Nitrogen use efficiency (%) 2019 2020 平均Mean 2019 2020 平均Mean 方正Fangzheng N0 110.3c 106.5c 108.4 － － － CF 164.1a 168.6a 166.4 32.6a 37.6a 35.1 BU 154.2b 155.3b 154.8 26.6b 29.6c 28.1 CRU60 152.3b 157.8b 155.1 25.5b 31.1bc 28.3 CRU90 160.9a 164.3a 162.6 30.7a 35.0ab 32.9 阿城Acheng N0 98.7c 100.6c 99.7 － － － CF 159.7a 168.1a 163.9 37.0a 40.9a 39.0 BU 146.1b 144.2b 145.2 28.7b 26.4b 27.6 CRU60 150.2b 151.3b 150.8 31.2bc 30.7b 31.0 CRU90 158.2a 165.9a 162.1 36.1ab 39.6a 37.9