Prediction of Vegetable Supply in Henan Province Based on PSO-GM (1, N) Model

Table 6

Prediction of influencing factors of vegetable supply.

Influence factors	Year
	2021	2022	2023
Number of rural employees	4083	3915	4440
Highway mileage	27.17	27.28	27.38
Application amount of pesticide	9.51	8.97	8.45