Management techniques of blueberry dormancy period

Blueberry is a popular berry plant in China, and its planting area is very large. Blueberries go into dormancy due to temperature in winter and early spring every year, about from October to March. After entering the dormant period, blueberries will stop growing and the fallen leaves will turn red. So how to manage blueberries during dormancy? The following editor brings you the management technology of blueberry dormancy period, let's have a look!

1. buckle the shed at the right time

The temperature decreases gradually around the end of October every year. When the temperature drops to about 5 degrees at night, do a good job of low light to promote sleep, roll up the cover in the greenhouse in the evening, and then open the vent. Close the vent every morning, re-cover the cover, keep the temperature at about 5 degrees for about 30 days, and then meet the requirements for blueberries to enter the dormancy period.

Then it is necessary to do a good job in clearing the garden, clean up the fallen leaves and diseased bodies in the field, and then do a good job in comprehensive disinfection. Before covering the plastic film in winter, the greenhouse should be poured with enough water to improve the cold resistance of blueberry plants and ensure that they can survive the winter safely. And blueberries need sufficient cold demand during the overwintering period, usually about 1000 hours. If the cold capacity is not enough, it will lead to various problems such as poor germination and insufficient flowering of blueberries, which will affect the yield and quality of blueberries.

2. Shaping and pruning

Pruning blueberry plants before sprouting can be carried out after entering the dormant period and before sap flow. When pruning, we should pay attention to the training of trees, and the commonly used pruning methods are thinning branches, cutting short and so on. The inner chamber branches, over-dense branches, plant diseases and insect pests branches of blueberry plants should be cut off. The main purpose is to improve the permeability of blueberry plants and coordinate the relationship between reproductive growth and vegetative growth of blueberry trees. Improve the tree potential to achieve the goal of high yield year after year. It is necessary to control the number of flower buds of blueberry trees, prune the length of fruit branches and remove dense and weak fine fruit branches according to the variety characteristics of blueberries.

3. Water and fertilizer management before sprouting

Before blueberry branches sprout, we should pay attention to water and fertilizer work. Apply appropriate amount of ammonium sulfate, potassium sulfate and other compound fertilizer. Control the amount of application according to the age of the tree, for example, adult trees generally apply about 80 grams per tree. The main method of fertilization is ring trench application, digging ditch around the tree plate. At the same time, we should pay attention to control the width and depth of the ditch, keeping the width at about 25 cm and the depth at about 15 cm. Then pay attention to pouring an appropriate amount of budding water after fertilization.

The above is a brief introduction to the management technology of blueberry dormancy. That's all for today's introduction. This article is for reference only. I hope it can help you all.