宁南旱区沟垄集雨结合覆盖对土壤水热肥与马铃薯产量的影响

吴春花, 普雪可, 周永瑾, 勉有明, 苗芳芳, 李荣

Effects of ridge-and-furrow rainwater harvesting with mulching on soil water- heat-fertility and potato yield in arid areas of southern Ningxia

WU Chun-Hua, PU Xue-Ke, ZHOU Yong-Jin, MIAN You-Ming, MIAO Fang-Fang, LI Rong

表2 不同处理下马铃薯产量与各指标的通径分析

Table 2 Path analysis of the relationship between potato yield and indexes under different treatments

自变量 Independent 相关系数 Correlation coefficient 通径系数(直接作用) Size coefficient (direct effect) 间接通径系数 Indirect path coefficient X1→Y X2→Y X3→Y X4→Y X5→Y X6→Y X7→Y 合计Total X1 0.856 1.396 0.09494 -0.16381 0.33008 0.23818 -0.24078 -0.79897 -0.54036 X2 -0.241 -0.411 -0.32248 0.12133 -0.09988 -0.13289 0.13440 -0.46942 0.16950 X3 0.589 -0.219 1.04421 0.22769 0.30450 0.27125 -0.27207 -0.76832 0.80726 X4 0.645 0.406 1.13495 0.10111 -0.16425 0.22053 -0.30805 -0.82292 0.16137 X5 0.545 0.321 1.03583 0.17015 -0.18506 0.27892 -0.25390 -0.82292 0.22302 X6 0.588 -0.298 1.12797 0.19995 -0.22136 0.31424 0.27349 -0.81526 0.87903 X7 0.604 -0.598 1.16426 0.20139 -0.17564 0.34875 0.27574 -0.25360 1.5609