Table 5. Associations between density and viruliferious characteristics of SBPH populations.

	V0	Q1	V1	Qmax	QV0	QV1
Q0	−0.186	0.641**	−0.419*	0.113	0.871**	0.386*
V0		−0.119	0.859**	−0.400*	0.283	0.272
Q1			−0.108	0.235	0.555**	0.544**
V1				−0.222	−0.013	0.423*
Qmax					−0.025	−0.127
QV0						0.458**

Q₀: overwintering SBPH density, V₀: viruliferous rate of overwintering SBPH, Q₁: first generation SBPH density, V₁: viruliferous rate of first generation SBPH, Q_max: SBPH density of peak stage, QV₀: viruliferous population density of overwintering SBPH (Q₀ × V₀), QV₁: viruliferous population density of first generation SBPH (Q₁ × V₁).

**significant at p = 0.01; *significant at p = 0.05.