| Abstract: In order to explore the feasibility of planting seedlings in low-mountain factory instead of farmers' self-cultivation in the 800-1 200 m high mountain, the adaptability, yielding ability and CO2 emission reduction effects of planting seedlings in low-mountain factory transplanted in the 800-1 200 m high mountain were tested through contrast experiment of different sowing date and different types of pepper cultivars and large-scale production. The results showed that the low mountain factory seedlings not only fully adapted to the environment of the 800-1 200 m high mountain areas, but also achieved a substantial increase yield in each experiment. The yield of pepper in the large-scale production experiment was 2 618.8 kg per 667 m2 , which was 1 035.4 kg higher than that of the farmer's self-cultivation seedlings with a yield increase rate of 65.4%. At the same time, the model of increased fuel costs and CO2 emissions of the pepper seedling planting in 800-1 200 m high mountain were calculated. Taking the plastic greenhouse with a length of 120 m, a height of 3.5 m and a bow length of 8 m for the seedling raising of 180 000 plants as the model, it was calculated that the temperature in the greenhouse of this model was 6 ℃ higher than that outside for 60 days, which required 10 t of coal burning
and an expenditure of 15 488 yuan, and CO2 emissions were as high as 24.8 t. However, planting seedlings
in the low-mountain greenhouse of this model required no heating, only 1 548 yuan of fuel expenditure for
transportation, and only 0.405 t of CO2 emissions. |