It's cold in winter. How to strengthen the management of loquat in winter?

Loquat trees bloom in winter and bear fruit in spring. The temperature in these two seasons is very cold, which is very easy to harm the yield of loquat. Therefore, how to improve the cold resistance of loquat trees in winter to obtain a bumper harvest and high yield?

Most of the frost damage of loquat occurred under the standard that there was no wind in Wan Li on a clear night from June 5438+February to March of the following year, but the frost damage caused by severe cold was relatively small except in a few areas. When flowers or young fruits encounter ultra-low temperature, embryos die or pericarp is frozen, the later the ultra-low temperature stage, the greater the damage, and the greatest risk of ultra-low temperature in March.

If the young loquat fruit is placed at ultra-low temperature, the embryo in the anther will die of cold. When the cold young fruit is cut horizontally, it can be seen that its embryo has become dark gray and dark brown. When all the embryos in a fruit die of cold, the growth and development of young fruit is completely terminated; Some embryos freeze to death, but they can grow and develop again, but the fruit can't reach the normal size and become deformed fruit, and the commodity value will also be reduced.

How to improve the frost resistance of loquat fruit by winter management measures

Canopy cover, fruit bagging, tree party member cadres banding or scraping white. Mountain loquat can be bagged quickly. The crown is short, especially for pruning fruit trees and greening seedlings. The crown can be covered with wheat straw and plastic film.

It is very important to choose places where freezing injury is not easy to occur, adopt low-temperature tolerant varieties, improve planting management ability, cultivate strong plant types and improve cold tolerance. Delay the time of thinning flowers and fruits, and try to choose flowers and spikes maintained in the crown of seedlings or by branches. When winter is dry, the plantation should be irrigated immediately. Before freezing injury, water should be sprayed on the tree crown or irrigated in Zhonghua Garden 8 to prevent dry freezing.

Facility cultivation

The equipment can be planted with bamboo, oak or seamless steel pipe and covered with plastic film. In severe cold, the temperature in the shed is 3 ~ 5℃ higher than that outside the shed, which can reduce the freezing injury. The mulching time of plastic film should be after loquat flowering or before freezing injury, but the mulching film before flowering should be uncovered after thawing and then covered after flowering. Pay attention to the changes of the temperature and environmental humidity of the arch shed after film mulching, and open the doors and windows appropriately for adjustment. Cover and spray. The trunk can be covered with mountain bark soil and grass stems, which can increase the soil temperature in the first frost period. Spray cold medicine on the trunk to prevent freezing.

How to realize the management method of loquat after catching cold

Immediately cover the soil shallowly, loosen the soil, inject water and cover, improve the soil temperature and humidity, and promote the growth and development of rhizomes. Immediately cut off obviously cold flowers and ears, reduce nutrient consumption, promote early buds and new shoots of tree stems, which is conducive to the next year's fruit harvest.