A villager prunes the tomato seedlings at a greenhouse in Gezitou Village of Jinzhong, north China's Shanxi Province, March 3, 2020. Farmers in Gezitou Village of Jinzhong have started the cultivating and managing work of tomato seedlings during the early spring season. The team led by Professor Sun Sheng from Shanxi Agricultural University has introduced the automatic insecticide sprayer, pest control system and water and fertilizer integrated system to help improve the production efficiency. (Photos: Xinhua)

A villager prepares to prune the tomato seedlings at a greenhouse in Gezitou Village of Jinzhong, north China's Shanxi Province, March 3, 2020. Farmers in Gezitou Village of Jinzhong have started the cultivating and managing work of tomato seedlings during the early spring season. The team led by Professor Sun Sheng from Shanxi Agricultural University has introduced the automatic insecticide sprayer, pest control system and water and fertilizer integrated system to help improve the production efficiency.

Photo taken on March 3, 2020 shows an automatic insecticide sprayer spraying pesticide for tomato seedlings at a greenhouse in Gezitou Village of Jinzhong, north China's Shanxi Province. Farmers in Gezitou Village of Jinzhong have started the cultivating and managing work of tomato seedlings during the early spring season. The team led by Professor Sun Sheng from Shanxi Agricultural University has introduced the automatic insecticide sprayer, pest control system and water and fertilizer integrated system to help improve the production efficiency.

Professor Sun Sheng (R) from Shanxi Agricultural University introduces how to prune tomato seedlings at a greenhouse in Gezitou Village of Jinzhong, north China's Shanxi Province, March 3, 2020. Farmers in Gezitou Village of Jinzhong have started the cultivating and managing work of tomato seedlings during the early spring season. The team led by Professor Sun Sheng from Shanxi Agricultural University has introduced the automatic insecticide sprayer, pest control system and water and fertilizer integrated system to help improve the production efficiency.

Professor Sun Sheng (L) from Shanxi Agricultural University checks the condition of tomato seedlings at a greenhouse in Gezitou Village of Jinzhong, north China's Shanxi Province, March 3, 2020. Farmers in Gezitou Village of Jinzhong have started the cultivating and managing work of tomato seedlings during the early spring season. The team led by Professor Sun Sheng from Shanxi Agricultural University has introduced the automatic insecticide sprayer, pest control system and water and fertilizer integrated system to help improve the production efficiency.