The phenomenon of birds pecking at fruits is common in pear orchards in China. Birds are becoming more and more harmful. Especially in newly built pear orchards, the damage rate is up to 100%. Birds have independent choices when they peck, mainly harming the outer fruits of the tree, and this area has good ventilation and light transmission, and is often high-quality fruit. Bird pecks cause serious economic losses to fruit farmers. In the face of bird damage, some traditional means of slingshot driving, shelling and intimidation, setting up scarecrows, catching bird nets, burning out bird nests, etc. not only have poor results, but also take time and labor, but also attract more collective revenge from birds. The vicious cycle of the ecosystem; using modern bird repellent methods, such as bird repellent (releasing a special fragrance odor that affects the nervous system and respiratory system of birds), bird repellent (which can imitate the special sound of birds ’natural enemies), etc., short-term It plays a certain role of avoidance, but after long-term use, the bird will gradually adapt, the effect of avoidance will decline, and it may not even play the role of due avoidance.
Bird net covering cultivation is a practical new technology of environmental protection agriculture. By covering the bird net on the scaffolding, an artificial isolation barrier is formed to prevent the birds from flying into the pear garden, which can effectively control the birds from harming the pear fruit.Moreover, it is environmentally friendly and pollution-free, and has the function of resisting natural disasters such as hail, which will provide an effective technical guarantee for the development and production of green and high-quality pome.
1. Selection of bird-proof net
At present, the market is multifarious, good and bad quality intermingled, the price varies, the choice of bird net, the first should consider the color of the bird net;Secondly, the size of the mesh and the service life of the mesh should be considered.
1.1 color selection
Colored bird protection net can reflect red light and blue light through sunlight, forcing birds not to approach, both can prevent birds pecking fruit, and can make the birds do not hit the net, can be in the premise of not harming the birds to achieve the role of drive prevention.Because birds are more alert to red, yellow, blue and other colors, it is recommended that the mountain hills use yellow bird nets, plain areas use blue and orange bird nets mainly, should not use transparent screen, this kind of net does not have a driving effect, birds easy to hit the net, both damage the birds and damage the net.
1.2 mesh and length selection
There are many specifications of anti-bird net, the size of the net can be selected according to the species of local birds, such as sparrows and other small individual birds, can choose 2.5~3 cm ×2.5~3 cm of the net;It is mainly composed of large individual birds such as magpie and turtledove. It can be selected from 3.5~4.0 cm ×3.5~4.0 cm mesh.Bird net general wire diameter 0.25 mm can be.Net length can be bought according to the actual size of the orchard, the market Internet products are mostly 100~150 meters long, about 25 meters wide, in order to cover the orchard as a whole.
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