| Abstract: In order to help facility agriculture for reducing carbon emission and fixing carbon, the variation trends of amounts of chemical fertilizer, the cost of chemical fertilizer or pesticide, net profit and double reduction economic coefficient per 667 m2 of facility tomato, cucumber, vegetable pepper and eggplant from 2011 to 2019 were analyzed, as well as the correlation between net profit and cost of chemical fertilizer and pesticide per 667 m2 , and the double reduction economic coefficients of four types of facility vegetable in five regions were compared. The results showed that the amount of chemical fertilizer, the net profit and double reduction economic coefficient per 667 m2 applied to the four types of facility vegetable all showed a downward trend, while the cost of chemical fertilizer and pesticide per 667 m2 all showed an upward trend. The amounts of chemical fertilizer, the cost of chemical fertilizer or pesticide and the double reduction economic coefficient per 667 m2 did not change significantly between years, and the net profit per 667 m2 changed significantly between some years.There was no significant correlation between the net profit per 667 m2
and the amounts of chemical
fertilizer, the cost of chemical fertilizer or pesticide per 667 m2
. From the perspective of different
regions, the economic benefit of facility tomato was relatively better, while the economic benefit of
facility pepper was relatively poor. It was suggested to further strengthen the research and application
of the double-reduction mode and technology, improve the agricultural environment and product quality,
and appropriately increase the planting area of facility tomato, while reduce the planting area of facility
pepper, so as to obtain better economic benefit. |