Application of Bird Prevention net for Fruit trees

At present, more than 98% of orchards have suffered bird damage, and the annual economic losses caused by bird damage are as high as 700 million yuan. Through years of research, scientists have found that birds are sensitive to color, especially blue, orange and yellow. For this reason, on the basis of this research, researchers invented a mesh made of polyethylene as the basic material to cover all orchards for apples, grapes, peaches, pears, cherries and other fruits, and achieved good results.

First, the color selection is generally recommended to use yellow anti-bird nets in mountainous areas, blue and orange anti-bird nets in plains, and birds dare not approach the above colors, which can prevent birds from pecking fruit and prevent birds from hitting the net. The anti-bird effect is obvious. It is suggested that transparent silk mesh should not be used in production. This kind of net does not have a driving effect, and birds are easy to hit the net.

Second, the mesh and net length selection depends on the size of the local bird body, such as sparrows and other small individual birds, can choose 3 cm mesh bird prevention net; such as magpie, turtledove and other larger individual birds, can choose 4.5 cm mesh bird prevention net. Bird nets generally wire diameter 0.25 mm can be. Net length is purchased according to the actual orchard size. The length of the net products on the market is 100~150 meters and the width is about 25 meters. It is better to cover the whole orchard.

Third, the height and density of the support When installing the fruit tree bird net, first lay the support, the support can be purchased as a finished support, or it can be welded with galvanized pipe, triangle, etc., and the buried part should be welded with a cross to resist lodging. Iron rings are welded on the top of each bracket, and iron wires are inserted to connect each bracket. After the bracket is laid, it should be firm and durable, and the height should be about 1.5 meters higher than the tree height of the fruit tree to facilitate ventilation and light transmission. Support density generally master length 5 meters, width 5 meters can be. Stand density depends on planting plant spacing and orchard size, the more dense the effect is better, but the more dense the cost is higher. Bird nets of the corresponding width can be purchased according to the width to save materials.

Fourth, the sky net and the side net set up fruit tree bird net to be three-dimensional erection. The net at the top of the canopy is called Skynet. Skynet is worn on the iron wire pulled at the top of the support. Pay attention to the tight junction without leaving any gap. The outer net of the crown is called the edge net. The junction of the edge net should be close and the length should reach the ground without leaving gaps. Skynet and edge net are closely connected to prevent birds from entering the orchard and harming it.

5, the installation time to determine the fruit tree bird net only to prevent birds from damaging fruit fruit, generally in the fruit ripening 7 to 10 days before the birds began to peck on the fruit tree bird net installation, fruit can be removed after complete harvest preservation, to prevent aging in the field exposure, affecting the service life.

6. Maintenance and preservation of bird-proof net for fruit trees Check at any time after installation of bird-proof net for fruit trees and repair them in time if any damage is found. After the fruit is harvested, carefully remove and roll the fruit tree bird net, pack it and store it in a cool and dry place. When the fruit is ripe in the next year, it can be used for 3~5 years.

Hebei Province Academy of Agriculture and Forestry Sciences Shijiazhuang Fruit Research Institute Ma Wenhui