Key Techniques for Good Cultivation of Cornus officinalis

Cornus officinalis meat, medicinal jujube, cornus meat, jujube peel and Shu jujube have the functions of antibacterial and sterilization, calming the mind and dispelling wind, nourishing the liver and kidney, and inhibiting the spread of cancer cells, especially after modern medical research has shown that Cornus officinalis has a new function of anti-HIV, the market demand is increasing day by day. If you want to grow Cornus officinalis, it is very important to master the technology.

1. Land preparation and planting

The selected site was carried out before sprouting in early spring, and the planting was carried out according to row spacing of 3m × 2m (111m / mu) or 2m × 2m (145m / mu), hole depth 30cm~50cm. Dig the bottom soil, apply the base fertilizer 10kg~15kg in each hole, mix with the bottom soil evenly, plant into strong seedlings, cut the tufted branches, and irrigate the fixed root water once. Seedlings should be dug out with small clumps in cloudy days, so that the survival rate is high.

two。 Topdressing in time

After the planting survived, organic fertilizer 10kg~15kg was applied in spring and autumn every year according to the age of the tree. In the physiological fruit drop period from the middle of March to the middle of April, each adult fruit tree should be topdressing with human fecal 10kg~15kg. In addition, in May, June, July and August at full flowering and young fruit stages, 0.2% boric acid, 0.2% potassium dihydrogen phosphate or 0.3% urea are sprayed alternately in the middle of each month, which can promote the vegetative growth and fruit development of Cornus officinalis, prevent flowers and fruits from falling, and increase the fruit setting rate.

3. Shaping and pruning

Cornus officinalis is mainly short fruit, strong sprouting power and weak branching ability, so it is suitable to use trunk stratification and natural happy tree shape. The relationship among growth, flowering and fruiting of Cornus officinalis can be regulated by shaping and pruning, so as to achieve the goal of early fruiting and early high yield.

4. Control of main diseases and insect pests

Anthracnose broke out in early June, harming the fruit. Young fruit disease, the initial emergence of round red dots, and then expanded into black sunken disease spots, its edge is purplish red, with irregular red halo, so that the green fruit is red before ripening. In severe cases, the disease spot continues to expand, resulting in the fruit blackening, drying up and falling off.

Prevention and treatment methods: spray 1RV 100 Bordeaux liquid at the initial stage of the disease, spray 50% carbendazim 800 times in the first and middle of June; remove diseased fruit in time, concentrate and bury deeply, reduce re-infection; increase the application of phosphorus and potassium fertilizer to improve the disease resistance of the plant.

The grey plaster disease is mainly harmful to the branches, and the thick film of round or irregular shape appears in the skin layer of the branches, which is similar to the plaster. After the adult tree is damaged, the tree is weak and even withered in serious cases.

Prevention and treatment methods: scrape off the mycelium membrane with a knife in time, brush the branches with Baumetu stone sulfur mixture to eliminate the scale insects; spray 1  1 100 Bordeaux liquid  3 times every 7 days and 10 days at the initial stage of the disease.

Fruit moth, also known as Cornus officinalis heart borer and jujube worm, harms the fruit by the way that the larvae eat the flesh. When the fruit of Cornus officinalis is first red, the larvae eat into the fruit, feed vertically and horizontally, and accumulate insect dung everywhere. With the ripening of the fruit, the damage is aggravated.

Control methods:  treated soil with 40% phoxim in late May to kill larvae; sprayed 20% kungfu 2000 times liquid during Eclosion period; made poison bait with vinegar and trichlorfon to trap moths.