The skill management of walnut seedling grafting technology needs to be fast
Grafting type Grafted seedlings are grafting new varieties of walnut seedlings on the rootstock seedlings (seed seedlings). There are two main types: tongue and bud.
1. Tongue splicing is divided into skin-inserting tongue splicing and double tongue splicing; 2. Bud splicing is divided into sub-bud walnut seedling grafting and square budding. Block bud grafting is the most commonly used walnut seedling grafting method in current production.
During the grafting period, the suitable period for the grafting of walnut seedlings is from mid-May to mid-June. The early survival rate is low. If the buds do not germinate or grow sufficiently late in the year, it will be difficult to overwinter.
Grafting Quality Appraisal The quality of grafting of walnut seedlings needs to be measured from the following four aspects:
1. The height of the whole plant after grafting is more than 60 cm; 2. The diameter of the grafted new shoot is more than 1 cm; 3. The roots of the grafted walnut seedling plant have more than 6 fine roots; 4. The grafted walnut seedling No pests and diseases. Check for survival in about 10 days. The sign of survival is petiole shedding or bud sprouting, and the unsurvived ones should be replanted in time.
Management after grafting 1. Do not irrigate within two weeks after grafting to prevent increased injury flow, resulting in a large amount of water in the interface, which will affect the survival rate. At the same time, check the joints frequently. If there is water, you must promptly cause injury and release the water. The scion starts to germinate in about 20 days, and observe it every 2 to 3 days, and let the bag of spreading leaves be released in time. The air vent should be small to large and not open all at once. 2. After survival, remove sprouts and loosen them in time. Removal of sprout can prevent nutrient consumption and facilitate the healing of the grafted site; the loosening time should be carried out when the new shoot grows to more than 20 cm. When the grafted seedling grows to 35-40 cm, fix it with a small bamboo pole or wooden stick to prevent wind break.
Note 1. Walnut field grafting uses green-branched scion. The most important method is to pick the scion nearby. If the scion needs to be transported or stored for a short period of time, moisturizing must be done. 2. The grafting site should be selected on the branches less than 3 years old. The grafting site is too thick and the cortex is too thick, which will affect the survival rate. 3. The grafting of larger rootstocks must be reshaped first and then grafted. 4. The grafting operation must be rapid and the bandaging must be tight.
Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone
Blood Colletion tube,Infusion set,Disposable Syringe,Insulin Syringe,gause roll,Cotton roll,Sterile Urine cup,EDTA Tubes,Plain Tube
FOSHAN PHARMA CO., LTD. , https://www.foshanmedicine.com