有机培肥措施对马铃薯光合特性、养分含量及产量的影响

张乐, 韩云飞, 杜二小, 李保成, 伞薪潼, 刘新雨, 王艳莉, 赵沛义, 任永峰

Effects of Organic Fertilization Measures on Photosynthetic Characteristics, Nutrient Content and Yield of Potato

Zhang Le, Han Yunfei, Du Erxiao, Li Baocheng, San Xintong, Liu Xinyu, Wang Yanli, Zhao Peiyi, Ren Yongfeng

表2 基于偏最小二乘法的马铃薯LAI、SPAD值、P_n、养分积累量、干物质积累量与产量的相关性分析

Table 2 Correlation analysis of potato LAI, SPAD value, P_n, nutrient accumulation, dry matter accumulation, and yield based on partial least squares method

指标 Index	皮尔森相关系数 Pearson correlation coefficient	变量投影重要性 Variable importance in projection	变量投影重要性排序 Variable importance in projection order
N	0.975^*	0.99106	4
P	0.982^*	0.99478	3
K	0.975^*	0.98984	5
LAI	0.986^*	0.99821	2
SPAD	0.937	0.97137	7
P_n	0.996^**	1.03314	1
干物质积累量Dry matter accumulation	0.969^*	0.98770	6