Table 5. Generation of climatic factors from climate variables in based on communality in the before and after silking stage

Variables	Factors in SS stage			Factors in SH stage
	First	Second	Third	First	Second	Third
Growing degree days	0.01	−0.25	0.65	0.10	0.69	0.01
Highest temperature	−0.24	0.68	0.50	−0.09	0.68	−0.13
Lowest temperature	0.26	0.07	0.73	0.71	0.48	0.30
Soil surface temperature	−0.29	0.24	0.74	0.21	0.91	−0.07
Relative humidity	0.55	0.64	−0.14	0.44	−0.11	0.59
Rainfall amount	0.90	−0.10	−0.10	−0.34	−0.24	0.81
Wind speed	0.12	−0.92	0.06	0.89	−0.11	−0.14
Sunshine duration	−0.84	0.05	−0.14	−0.39	0.73	−0.21
Lodging (%)	28.45	23.41	19.33	28.95	28.56	12.69
Cumulated lodging (%)	28.45	51.86	71.19	28.95	57.52	70.20

SS, seeding to silking; SH, silking to harvesting.