Causes and control methods of pear trees

Pear trees are planted all over our country, and pears are also welcomed by many people. For pear growers, the size of pear trees is a big headache for them. The annual meeting of pear tree size seriously affects the yield of pear trees and reduces the economic benefits of growers. So what is the reason for the size of the pear tree? How to prevent and cure it? The following editor brought the reasons and prevention methods of pear trees, let's have a look!

First, reasons

1. Tree cause

In years when pear trees bear more fruit, nutrients are constantly transported to the fruit. As a result, the nutrient accumulation of pear trees decreased greatly, resulting in the lack of sufficient nutrients to form flower buds in that year. Therefore, after the Lunar New year, there is a small year phenomenon because the accumulation of nutrients in the tree is too little. In small years, because the amount of fruit is less, the accumulation of nutrients becomes more and more, and there is sufficient nutrition to promote flower bud differentiation. Therefore, in the second year, it is the big year of the pear tree, and this cycle leads to the size of the pear tree.

2. Environmental reasons

Environment is one of the main reasons for the age of pear trees. In harsh conditions, such as low temperature, frost and drought, it is very disadvantageous to the growth of pear trees. For example, pear trees, which are normally bearing fruit, fall flowers and fruits because of late frost and so on. Resulting in excessive accumulation of nutrients in the tree, the emergence of a large number of flower buds, in the second year will enter the Lunar New year. In addition, diseases and insect pests are also easy to lead to big and small years, diseases and insect pests are easy to cause pear leaves and flowers. Affect the flower bud differentiation of pear trees, if there is no timely control, the second year is easy to become a small year.

II. Prevention and control methods

1. Reasonable pruning

We should control the amount of flowers on the pear tree through reasonable pruning to ensure that the pear tree has a suitable proportion of leaves and fruits. Avoid the accumulation of tree nutrition is not proportional to consumption, and alleviate the phenomenon of big and small years. It should be cut heavily in the Lunar New year, while it should be cut lightly in the younger year. When pruning in the big year, we should take ensuring the yield of the same year as the premise, control the number of flower buds, and cut short the medium and long fruit branches. Deal with overdense and overlong branches to improve the light environment. Small years should be less sparse and less short, and no major adjustment and renewal of pear trees should be made. Then we should pay attention to do a good job of summer shearing, promote the secondary branches of pear trees, and increase the number of flower buds in the second year.

2. Strengthen the management

In the flowering and fruiting stage of pear trees, we should properly thinning flowers and fruits, avoid overloading pear trees, adjust the proportion of leaves and fruits, and improve nutrient accumulation. Special attention should be paid to flower thinning, and early appropriate flower thinning can effectively reduce nutrition consumption. Then we should also pay attention to fertilizer and water management to enhance the absorption capacity of pear roots and ensure the nutrient absorption of pear trees. Do a good job in pest prevention and control, avoid natural disasters, can also effectively prevent the size of pear trees. Finally, rational use of growth regulators to promote flower bud differentiation. Ethephon and other regulators are the main regulators in the big year, and gibberellin is the main regulator in the small year.

The above is a brief introduction to the causes and control methods of pear trees. That's all for today's introduction. This article is for reference only. I hope it can help you all.