Orchard bird damage effective defense method

In recent years due to the improvement of China’s ecological environment and the increasing awareness of environmental protection, the state’s popularization of the bird protection law and the restricted use of hunting rifles and other devices, the number of species and population of birds has increased dramatically; Strengthening, improving the quality of fruit, the appearance of variegated, sweet, early maturing and late-maturing new varieties also enhances the temptation of birds, especially the exposed fruits, and are more vulnerable to bird attacks. After the fruit is eaten and damaged by the bird, the wounds are scarred, the residual fruits are everywhere, the value of the commodity is completely lost, and the pests and diseases are further damaged. The harm of birds has reached the point of non-governance.

At present, there are several types of effective bird repellent methods in China:

1, fruit bagging

Ear bagging is the easiest way to prevent bird damage, and it also prevents the influence of pests, pesticides, and dust on the ear. But birds with large mouths, such as gray magpies and crows, can often break through paper bags to feed on fruits. Then those birds with small mouths, such as sparrows, add to the snow, and fruits that have been eaten are extremely prone to insect pests in the area. Therefore, we must use good quality, tough paper bags. Nylon wire mesh bags can be used for bagging in areas where there are many birds. This will not only prevent bird damage, but will not affect fruit coloring, but it is relatively costly. At the same time, bagging can only be effective for grapes, apples, pears, etc., and it is not suitable for cherries, blueberries, etc.

2. Set up an anti-bird net

Anti-bird nets are applicable to large-scale orchards as well as small-scale orchards. In the mountainous orchards, it is best to use yellow anti-bird nets, and in the plains, red anti-bird nets are used. These are mountainous and plain birds. The two most feared colors. In regions where hail is frequent, adjusting the size of the grid and combining the flood prevention net with the anti-bird net is a good measure to do more with less. However, the average cost per acre of the anti-bird net is relatively large, and its service life is short. Every year after fruit harvesting, it must be collected and used. It is also more time consuming, and it is prone to ageing and bursting due to exposure to the hot sun and strong winds, especially at the beginning of this year. Anti-bird nets are damaged due to the collapse of heavy snow, and the loss is very high.

3. Add an isolation network

For certain fruits such as dried raisins, air inlets, vents, and vents, appropriate specifications of barbed wire and nylon mesh are set in advance to prevent birds from entering.

4, improve the cultivation methods

In areas where there is frequent bird damage, proper conservation of leaves, cover of the ear, and attention to the health conditions around the orchard can also significantly reduce the occurrence of bird damage.

5. Use bird repeller

In the past two years, some local governments have begun to use intelligent voice bird eliminators developed by experts from China Agricultural Information Technology Center and Northwest Agriculture and Forestry University. The system uses low-power microcontrollers as the core and adopts the latest digital voice storage technology. The sound chip library of birds uses high-performance controllers to play high-fidelity sounds in order of random playback order, frequency, etc. Experiments have proved that the intelligent voice bird-removing system can realize sustainable and effective wide-area drive of orchards, farmlands, and fish ponds. bird. The maximum effective area of ​​this bird repellent product is up to 50 mu, which greatly reduces the cost of using the orchard. After more than two years of promotion testing of the product by China Forest Fruit Network, the product is suitable for many types of fruit crops, and there are many types of bird repellent. Has been successfully used in the cherry, loquat, grapes, pears, apples, red bayberry, millet and other crops, all kinds of orchards harm the birds have a good drive effect. After fruiting in orchards in Yantai and other places in Beijing, there are obvious results. According to statistics, the orchards do not use bird-repellent devices and generally lose 25%. Some bird-destroying areas suffer fruit loss as high as more than 50%. Fruits in individual areas (such as cherries ) Even out of production. After using the bird repeller, the loss of 30%-70% can be reduced, saving huge losses for the fruit farmers and gaining the praise of the fruit farmers.

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