Three key points of jujube spring tube
(I) Tree Management Tree body management mainly includes: shaping of young trees and pruning of mature trees. Spring pruning is generally carried out from mid-March to mid-April (before budding). 1. The young tree will be dried and shaped. Young trees should be dried early but not late. Traditional late and high-dried stems are important reasons for late results. Appropriate early-setting and low-setting are beneficial for early forming and early results. Generally, it should be done 2 to 3 years after planting, when the tree is more than 1 to 1.2 meters high, and the fixed height is about 80 cm. Remove all secondary branches below the fixed dry part or leave a short section. 2. Pruning the result tree. Under reasonable premise, maintain a certain vegetative growth of jujube trees, promote root growth, and maintain a strong tree body. Follow the principle of "pruning the tree and following the shape of the branches", mainly to solve the problem of ventilation and light, and moderately double cut the jujube heads with extended branches on the periphery to maintain the growth of jujube heads at about 30 cm per year. The subordinate relationship of the tree body, after pruning, the total number of buds on the head of the raw jujube that year should account for 1/8 to 1/6 of the whole tree to ensure that the tree body is robust, airy and transparent, and the appropriate amount of branches and leaves. (2) Management under the tree 1. Fertilize. Fertilization in spring includes adding base fertilizer in early spring and top-up fertilizer in late spring. In late spring, top-dressing quick-acting fertilizer is mainly nitrogen fertilizer, which is carried out before and after germination in April to May. Generally, adult trees are digging small pits with a depth of 4 to 8 cm and a depth of 30 to 40 cm on the inner side of the tree. Each plant is topdressed with 0.5 to 1 kg of urea and 2 kg of superphosphate. 2. Plowing and repairing tree trays in spring. The ploughing in spring is carried out after the soil is thawed. The ploughing depth is 30 to 40 cm, and the depth near the trunk should be shallow to prevent injury to large roots. Areas and periods with strong winds and strong winds in spring should not be ploughed. Spring ploughing in mountainous areas should be carried out together with repairing and reorganizing tree trays. 3. Irrigation in spring. Most of the spring in the north is dry and rainy, and the irrigation effect in the bud period is very good. Generally, irrigation or furrow irrigation is adopted. The amount of irrigation should be determined according to weather, moisture, tree vigor, tree age, etc. Spring irrigation is best combined with topdressing. (Three) pest control The main pests in jujube area in spring are jujube ruler, bud-eating weevil, jujube pattern, green blind stink bug, etc., which should be controlled early in the key period. For diseases such as jujube mad disease, jujube rust, anthracnose, and ring disease, we should also clean the jujube garden in spring, cut off the disease and insect branches, and burn them intensively to alleviate these diseases. 1. Scrape bark and spray stone sulfur mixture. It is best to scrape off the old tree bark in winter and freeze the overwintering eggs. In early March, the whole tree was sprayed with a sulphur mixture of 5 degrees of beauty, once to eliminate the spider mites, scale insects and other disease and insect sources. 2. Wrap plastic tape or sticky shellac. In the middle and late March, a 6-10 cm wide plastic band or sticky shellac was wrapped around the lower part of the trunk to prevent jujube and other pests from getting on the tree, and poisoned jujube and jujube buds. Disclaimer: Some articles on this website are transferred from the Internet. If third party legal rights are involved, please inform this website to deal with them. phone Medical Equipment Disposal,Syringes Needles Sizes,Disposable Syringe,Insulin Syringe FOSHAN PHARMA CO., LTD. , https://www.fspharmaapi.com