How many cypresses can be planted in an acre of land?

The planting distance of Phellodendron amurense is about 3 to 4 meters, and each mu can be planted with 160 to 200 plants.

Cortex Phellodendri is produced in southern Inner Mongolia, Jilin, Liaoning, Hebei, Shanxi, Shandong, Jiangsu, Zhejiang, Fujian, Anhui, Jiangxi, Henan, Shaanxi, Gansu, Sichuan, Yunnan, Guizhou, Hubei, Hunan, northern Guangdong and northwestern Guangxi. It is cultivated in Deqing and Dazi in Tibet. Vertical distribution Jilin is 250m above sea level, Hebei, Shandong and Shanxi are 1000 to1200m above sea level, Henan and Shaanxi are1500m above sea level, and central and northwest Yunnan are 3300m above sea level. There are natural forests in Xinglong, Hebei Province, Taihang Mountain in Shanxi Province, Weihe River Basin north of Qinling Mountains in Shaanxi Province and Lancang River Basin in Yunnan Province. Afforestation is mostly used in Carboniferous stony mountains, sunny slopes and plains north of Huaihe River and North China.