Rhus chinensis is a small deciduous tree or shrub of Rhus, and its height can reach 10 meter. Branchlets are brown, leaves are polymorphic, ovate or elliptic, ovate or oblong, with acute apex, rounded base, terminal leaflets wedge-shaped, leaves dark green, back flour green, and leaflets sessile.

The salt precipitated by Rhus chinensis is the salt in the soil it absorbs. Rhus chinensis itself does not produce salt, but secretes the salt from the land it absorbs and forms crystals on the bark surface. The salt secreted by Rhus chinensis is of higher quality than refined salt. Locals will carefully scrape off the salt on the surface of sumac wood and use it when entertaining important guests.

type

Rhus chinensis can be propagated by sowing, rameting and cutting, and sowing is the most commonly used method. In the middle of March in spring, plant ash added 40℃ ~ 50℃ warm water to make it paste, and scrubbed the seeds of Rhus chinensis. Mix clean water with lime water with the concentration of 10% and stir evenly. After soaking the seeds for 3-5 days, spread them on the ground, cover them with grass curtains, and water them 1 time every day. Sow the seeds after they turn white. Sowing time is from late March to early April in spring. The sowing amount is about per mu 15 kg.

decrease

Pruning of Rhus chinensis should start from nursery, usually before winter or early spring. For small seedlings, it is necessary to ensure the top advantage of the main extension branches and cut off the side branches in time. Trimming side branches should be timely and appropriate. Timely means after the sap stops flowing in winter. Appropriate amount refers to gradually cutting off the lower branches according to the requirements of fixed stem, so that the tree body becomes a polished rod, thus affecting the growth of trees.

Seedlings can be pruned after planting, and the pruning height is generally not less than 2.8m m. In the spring of the following year, many new branches will sprout under the cut. When pruning in winter, 3 ~ 5 branches should be selected as the main branches for cultivation, and the selected branches should be scattered up and down, each on one side and evenly distributed. Branches used for main branch culture should be properly cut short, and external buds should be left under the cut. In the winter of the following year, two lateral branches are selected on the main branch, and two lateral branches are selected on each main branch. In this way, the basic tree shape of trees is formed. After that, it is mainly maintenance and pruning, and timely pruning dense branches, drooping branches, cross branches, miscellaneous branches and pest branches.