【Planting technology】Main points of spring management of Zanthoxylum bungeanum
Zanthoxylum bungeanum, as an important spice, oilseed, medicine and food homologous crop in China, has important economic value. The prickly ash experienced the low temperature in winter, and the tree entered a state of dormancy; in the beginning of spring every year, flower buds began to germinate. The quality of spring management is the key to determining 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:
I. Apply germination fertilizer to promote roots and shoots
In spring, the branches and leaves of Zanthoxylum bungeanum germinate in large quantities, blossom and bud, and require a large amount of nutrient supply. Before the branches emerge, an appropriate amount of quick-acting nitrogen fertilizer and phosphorus and potassium fertilizer should be topdressed. Due to the influence of low temperature in winter and poor soil permeability, the root system of prickly ash is inactive, and the utilization rate of water and fertilizer is low, which can easily lead to the lack of nutrients in the tree and hinder the growth of the tree. After the temperature rises in the early spring, apply Miangenwang + Ruifeng Guomei to promote the growth of the root system of Chinese prickly ash, improve the utilization rate of fertilizer, and promote the growth of prickly ash buds.
In addition, due to the extensive use of the old medicines of Zanthoxylum bungeanum in the early stage, the Zanthoxylum bungeanum is prone to problems such as excessive harvesting and compactness in the later stage. During this period, prickly ash is in the critical period of spring bud germination. It is recommended to use sprout enemy + Ziqi foliar spray to promote the flower bud differentiation of the tree and the germination of more flower buds on the lower branches, improve flower quality, and elongate the tidbits, which is beneficial to prickly ash in the later stage. The fruit set is enlarged.
Second, pruning and pulling branches pest control
Prickly pear pruning is generally carried out after falling leaves to before germination, mainly to thin out over-prosperous branches, overlapping branches, diseased and insect branches, and side branches with too low main trunks. Pulling branches improves the tree skeleton, expands the crown, and improves light transmittance. In addition, the temperature rises in spring, and various hibernating and dormant insects and germs also begin to germinate. Use broad-spectrum compound pesticides to control aphids, scale insects, red spider mites and other insect pests before the germination of prickly ash, and spray together with fungicides to prevent the occurrence of diseases and insect pests; after the pests sting, choose the main pesticide culling for control , reduce the pest index.
3. Antifreeze to prevent cold in spring
Antifreeze of prickly ash is a top priority of spring management. Zanthoxylum bungeanum sprouts early, and it is prone to cold in spring. Taking emergency defense technology before the cold damage comes is the main measure to prevent freezing damage. First of all, irrigation treatment should be carried out 2-3 days before the arrival of the cold wave to reduce the daily change of the temperature of the near-surface air layer and reduce the degree of cold damage caused by the drastic temperature change of the tree; when the temperature in the Jiaoyuan falls below 3 °C, aerosols can be used. Reduce the ground heat dissipation, play a thermal insulation effect. Secondly, spray Ziqi + Yunge before the arrival of the cold spring to improve the ability of the tree to resist low temperature and chilling damage and prevent leaf buds and flower buds from freezing and necrosis.
For prickly ash plantations severely damaged by freezing, properly prune the branches of prickly ash damaged by freezing, and apply quick-acting nitrogen and phosphorus and potassium fertilizers as soon as possible. Normal growth and nutrient supply for new branches, enhance tree vigor, and reduce economic losses due to freezing damage.
Ruifeng Guomei + Miaogenwang
Zi Qi + Yun Ge
Matters needing attention: 1. Plant growth regulators do not mix with alkaline pesticides. It is recommended to spray from the base of the tree to the top first, and then spray the back of the leaves before spraying the leaves. surface.
2. The management of different regions and varieties is slightly different. It is recommended to carry out management work according to the actual local conditions.