In recent years, the price of walnuts has been rising. Many local farmers plant new varieties of walnuts. However, due to the poor control of new varieties of walnut seedlings and grafting techniques, the grafting and planting survival rate is very low. On June 3, Cao Jirong, Longtou Village, Diangong Township, Changwu County, Shaanxi Province called the newspaper on this issue and asked about walnut grafting technology. Recently, the reporter interviewed members of the expert advisory group of the newspaper and professor Lu Pinghui of the fruit tree expert of Northwest Agriculture and Forestry University. "The purpose of walnut grafting is to ensure its survival rate." According to Professor Lu, there are two main methods of walnut grafting, one is grafting and the other is budding.
Branch connection
"Before grafting, the selected shoots or shoots are to be screened, and the branches or shoots taken are called scions." Professor Lu Pinghui said that scion collection can be carried out before the budding of walnut trees in the early winter and early spring. Cut the annual, full, disease-free shoots from the strong, superior trees and place them for 1 or 2 days until the injury stops. 12 to 15 cm long with 1 to 2 intercropping scion segments.
In the spring, the walnuts are infrequently injured. Therefore, before grafting, the trees must be drained before they can be grafted. The trees that are to be connected should not be poured with frozen water, especially if they cannot be watered early in spring. Well-watered and well-watered plots should be released 3 to 5 days in advance, and the dry hillside can be grafted while the water is placed. When the water is drained, first horizontally cut deep wounds on the xylem on both sides of the trunk, and leave 1 to 1.5 centimeters for each cut at the butt joint.
In the selection of grafting time, Professor Lu believes that the best time for flowering in local rapeseed should be. The method is as follows: firstly, the opposite side of the bud is cut into a wedge shape of 4-6 cm in length, and then the old skin of the wedge-shaped back is completely shaved. When grafting, the wedge surface is connected to the xylem, the cortex is inserted, and the wedge surface is not exposed. Then, the 0.25 mm plastic strip is used to secure the interface. After tying the interface, pick another small hole opposite the rootstock and scion to facilitate full drainage.
budding
Walnut buds are grafted in the growing season using the new shoots of the year. They are characterized by the saving of scion, simple operation, and high survival rate. The fruit grower can read it at a glance, learn a lesson, have high efficacy, fast growth, and easy promotion. Its main technical content includes:
The scions were selected to have full shoots on the periphery of the crown and strong growth of the current year's branches. The post-harvesting leaves were removed and only 2 to 2.5 cm of petioles were left. Prof. Lu said that the walnuts could be grafted until the middle of August, especially in wheat. About ten days before maturity, the best results are obtained. Buds are often used for peeling and sticking, and the survival rate of grafted plants is high. The specific method is as follows: Select the right scion in the left hand, and then use the bud to catch the knife in the right hand. First cut a knife 1 cm above the bud, and then cut a knife 1 cm below the bud to shoot the left and right sides of the bud. Cut 1 cm at 1 cm, and gently grab the square buds with the fingers at the base of the petiole, or gently stir with the bone of the grafting knife to make the buds to be removed. The root buds can be 10 to 25 cm above the rootstock. The smooth and flawless place, quickly cut into a square incision, incision size consistent with the buds, take buds tightly tied after binding, survival after grafting, choose to stay strong and robust training into excellent seedlings.
If grafted now, Prof. Lu suggests that the majority of farmers use budding. Professor Lu stressed that budding joints should pay special attention to the following three points: First, pay attention to the weather conditions. If there is rain within three days, it is not suitable for grafting. Second, it is necessary to choose full-grown shoots in the lower part of the growing and healthy branches of the year. Otherwise, it will affect grafting. The survival rate of the branches; Third, must be tightly tied after taking buds, so as to avoid water rot and pathogen infection.
White garlic,also called Normal White Garlic or purple white garlic,is the most common garlic variety of Shandong,China. The skin ofnormal white garlic is basically white but White garlic also has a few purple stripes on it.
Normal white garlic, new crop
1. Commodity name: Normal White Garlic (Regular white garlic or Single Clove Garlic)
2. Feature: strongly spicy, milk white flesh, naturally bright color, no burnt, no mouldy, no broken, no dirt skins, no mechanical damaged, 1-1.5cm stem length, roots cleaness.
3. Size: 4.5-5.0cm, 5.0-5.5cm, 5.5-6.0cm, 6.0-6.5cm, 6.5cm & up.
4. Packing:
1) Loose packing(inner string bag):
a) 5kgs/carton, b) 10kgs/carton, c) 20kgs/carton; d) 5kgs/mesh bag, e) 10kgs/mesh bag, f) 20kgs/mesh bag
2) Prepacking:
a) 1kg*10bags/carton b) 500g*20bags/carton c) 250g*40bags/carton
d) 1kg*10bags/mesh bag e) 500g*20bags/mesh bag f) 250g*40bags/mesh bag
g) prepacked by 1pc/bag, 2pcs/bag, 3pcs/bag, 4pcs/bag, 5pcs/bag, 6pcs/bag, 7pcs/bag, 8pcs/bag, 9pcs/bag, 10pcs/ba, 12pcs/bag, then packed with 5 or 10kgs carton, 5 or 10kgs mesh bag outside h) packed according to clients' requirements.
5. Supply period: all the year round
a) Fresh Garlic: early June to end August
b) Cold storaged garlic: early September to the next middle May
6. Conveyance:
a) Cartons: 24-27.5MT/40' HR (If palletized: 24Mt/40' HR)
b) Bags: 26-30Mt/40' HR
7. Transporting and storing temperature: -3°C--+2°C
8. Shelf life: stored for up to 12 months in proper conditions
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