辽河三角洲稻区施氮水平对水稻生长发育及产量的影响

李波,宫亮,曲航,金丹丹,孙文涛

Effects of Nitrogen Application Rate on Rice Growth and Yield in Liaohe Delta

Bo Li,Liang Gong,Hang Qu,Dandan Jin,Wentao Sun

表1 不同施氮水平下水稻株高的动态变化

Table 1 Dynamic changes of rice plant height under different nitrogen application rates cm

处理 Treatment 移栽后天数Days after transplanting (d) 26 47 61 68 138 N0 31.4±2.21a 44.6±1.25a 62.3±2.21a 73.8±0.88a 74.8±1.29a N160 34.5±2.26a 48.1±2.26b 74.4±1.27b 84.7±1.23b 81.7±2.25b N210 34.6±1.62a 49.3±2.27b 74.6±2.20bc 86.2±1.21bc 83.7±2.74b N260 35.3±1.43a 49.2±3.24b 77.9±2.33c 87.1±1.99bc 83.4±2.86b N315 34.9±2.26a 50.3±3.21b 77.8±2.16c 86.4±1.25bc 82.4±2.25b N420 34.7±1.24a 52.5±1.82b 80.3±1.22cd 89.2±2.28cd 87.6±1.21c