北方粳稻最优产量氮肥阈值周年变化及其影响因素分析

陈玥, 宫亮, 金丹丹, 张鑫, 李波, 邹晓锦, 隋世江, 叶鑫, 刘艳

Annual Variation of Nitrogen Fertilizer Threshold for Optimal Yield of Northern Japonica Rice and Its Influencing Factors Analysis

Chen Yue, Gong Liang, Jin Dandan, Zhang Xin, Li Bo, Zou Xiaojin, Sui Shijiang, Ye Xin, Liu Yan

表4 氮表观平衡各因素与推荐施氮量周年变化的通径分析

Table 4 Path analysis of the annual changes of nitrogen apparent balance and recommended nitrogen application

因素 Factor 通径系数Path coefficient 相关系数 Correlation coefficient x1 x2 x3 x4 x5 x1 1.2616** 0.6440 -0.0084 -0.3881* -0.7260** 0.7831** x2 0.5362 1.5152** -0.1423 -0.5722** -0.6283** 0.7087** x3 0.0201 0.4080 -0.5283** 0.2104 0.2019 0.3121 x4 -0.6125* -1.0846** -0.1390 0.7994** 0.4704* -0.5663** x5 0.8720** 0.9063** 0.1015 -0.3580* -1.0504** 0.4715*