As an important spice, oil, medicine and food homologous crops in China, Zanthoxylum bungeanum has important economic value. Zanthoxylum has experienced low temperature in winter, and the tree body enters a dormant state; every year in the beginning of spring, flower buds begin to germinate. The quality of spring management is the key to determine the high yield of Chinese prickly ash, and it is very important to do a good job in spring management. The spring management of pepper should pay attention to the following points:
　　1. Application of Germination Fertilizer to Promote Roots and Buds
A large number of branches and leaves of Zanthoxylum bungeanum sprouted in spring, flowering bud, need a large amount of nutrition supply, before the branches sprouted to apply appropriate amount of fast-acting nitrogen fertilizer and phosphorus and potassium fertilizer. Due to the influence of low temperature in winter and poor soil permeability, the root system of Zanthoxylum bungeanum is not active, and the utilization rate of water and fertilizer is low, which can easily lead to the lack of element and the growth of the tree is blocked. After the temperature rises in spring, aim at root prosperity + Ruifeng fruit beauty to promote the growth of prickly ash root system, improve fertilizer utilization rate, and promote prickly ash buds to be strong.
In addition, due to the extensive use of prickly ash old medicine in the early stage, prickly ash is prone to problems such as excessive old age and compact trivia in the late stage. During this period, Zanthoxylum bungeanum is in the critical period of spring bud germination. It is suggested to spray on the foliar surface of the bud to promote the flower bud differentiation of the tree body and the germination of more flower buds from the lower branches, improve the flower quality, lengthen the flower floral, which is beneficial to the fruit expansion of Zanthoxylum bungeanum in the later period.

　　Pest control of 2. pruning and branch pulling
Prickly ash pruning and branch pulling are generally carried out after defoliation to before germination, mainly to remove excessive branches, overlapping branches, pest branches and side branches with too low trunk. Branches to improve the tree skeleton, expand the crown, improve light transmittance. In addition, the temperature rises in spring, and various hibernating insects and germs begin to sprout. Before prickly ash germination, broad-spectrum compound pesticides are used to control aphids, scale insects, red spiders and other pests, and foliar spraying with fungicides to prevent the occurrence of diseases and insect pests. After the pests emerge, the main pesticide is selected for control to reduce the pest index.

3. antifreeze to prevent late spring cold
Chinese prickly ash antifreeze is a top priority of spring management. Zanthoxylum bungeanum sprouts earlier, spring prone to spring cold, before the advent of cold injury to take emergency defense technology is the main measures to prevent freezing injury. First of all, irrigation treatment is carried out 2-3 days before the cold wave, so as to reduce the daily variation of the temperature of the air layer near the ground and reduce the degree of cold damage caused by the severe temperature change of the tree body. In the pepper garden, the temperature drops below 3 ℃, and the smoke agent can be used to reduce the heat dissipation on the ground and have the heat preservation effect. Secondly, Ziqi + Yunge was sprayed before the late spring cold to improve the ability of the tree to resist low temperature and cold injury and prevent leaf buds and flower buds from freezing and necrosis.
For the pepper plantations with severe freezing injury, prune the pepper branches with freezing injury properly, and apply quick-acting nitrogen fertilizer and phosphorus and potassium fertilizer. It is suggested to cooperate with Ziqi + Yunge leaf spray to enhance the photosynthetic efficiency of leaves and produce nutrients, so as to keep the normal growth of existing pepper buds and the nutrient supply of new branches, enhance the tree vigor and reduce the economic losses caused by freezing injury.
　　

Ruifeng Guomei + Aiming at Root Prosperity

Ziqi + Yunge

Note: 1,plant growth regulatorDo not mix with alkaline pesticides. It is recommended to spray from the base of the tree to the top, first spray the back of the leaf and then spray the surface of the leaf.
2, different regions, different varieties of management slightly different, it is recommended to combine the local actual situation to carry out management work.