Reasons for pear trees producing many flowers but few fruits and a low fruit-setting rate, and how to solve it

The pear is one of the most common fruits in China. It is sweet and delicious, crisp and juicy, and is also one of the best fruits for clearing heat and detoxifying. However, pear trees also encounter many problems during cultivation, and among them, many flowers but few fruits is relatively common. So why do pear trees produce many flowers but few fruits? How can this situation be solved? Let's take a look below.

1. Causes

Many flowers but few fruits on pear trees may be caused by excessive nitrogen fertilizer. Applying too much nitrogen fertilizer will cause the pear tree to grow excessively, producing only flowers and no fruit. In addition, some fruit growers pour incompletely decomposed farmyard manure into the orchard, which can also cause the fruit trees to grow excessively and produce only flowers without fruit. Excessive moisture leads to pollination failure. When the pear tree is in its flowering period and encounters rainy weather, and drainage in the orchard is also poor, the tree body will develop poorly, affecting pollination between male and female flowers and reducing the fruit-setting rate.

2. Control measures

First, understand the reasons why pear trees produce many flowers but few fruits, and then treat the cause accordingly. The amount of nitrogen fertilizer applied should be controlled, fertilization should be reasonable, and it should be sprayed together with Zhikong Cuhuawang. This can replace other hormones used as pesticides to eliminate fruit-bearing shoots, and can also reduce the labor burden of girdling. The growth rate of branches and shoots should be controlled. If they grow too long, they should be pruned appropriately to keep the flowers on the tree balanced, transfer the nutrients of the flowers to the fruit, and improve the quality of the fruit flesh. Pay attention to observing the moisture conditions in the orchard, control and pay attention to drainage, and methods such as bees can be used to increase the pollination rate.

3. Methods to increase the fruit-setting rate

(1) The nutrition of the whole tree must be ensured. One month after harvest, base fertilizer and organic fertilizer can be applied to promote soil nutrition and maintain the growth and development of the pear tree roots.

(2) After ensuring the nutrition of the pear tree, the pollination rate between pear flowers must be ensured. Because the success rate of natural pollination is relatively low, artificial pollination can be used. For example, a nutrient solution containing substances such as zinc can be sprayed during the flowering period, which can promote pollination and fertilization. A small brush can also be used to dip a little pollen onto the flowers for pollination, but this method is relatively risky because carelessness can damage the stigma and produce the opposite effect.

(3) Pay attention to flower thinning and fruit thinning, and keep the flowers on both sides of the pear tree. Leave one fruit about every 20 cm, remove the small ones and keep the large ones, and for the denser ones, remove the upper and lower ones. Deformed fruits and diseased fruits should be dealt with in time. Also pay attention to weather conditions, drain water in time during rainy weather, and apply more foliar fertilizer.

This situation of many flowers but few fruits is relatively common and will affect the yield of pear trees, thus directly affecting the interests of fruit growers. Therefore, correct management is essential. Artificial pollination is a very important step in cultivation. Increase the pollination rate and fruit-setting rate, pay attention to drainage in the orchard, and avoid the occurrence of this situation.