Methods of preventing and expelling birds in orchard
In the orchard, birds peck fruits, not only directly affect the yield and quality of fruits, but also a large number of wounds of the fruits are conducive to the propagation of pathogens, making the disease epidemic; at the same time, in spring, birds will peck at the tender buds of fruit trees, trample on grafting branches, etc., so appropriate measures must be taken to prevent and control them. The effective bird pest control measures should be the organic combination and comprehensive application of a variety of methods. The following several bird pest prevention and control methods are for the reference of fruit farmers.
1. Fruit bagging
Fruit bagging is the most simple method to prevent bird damage, but also to prevent disease, insects, pesticides, dust and other effects on the fruit. When bagging, the paper bag with good quality and strong tenacity must be selected. In areas where there are many birds, nylon mesh bags can be used for bagging, which can not only prevent bird damage, but also do not affect the color of the fruit, but the cost is relatively high.
2. Set up bird proof net
The anti bird net is suitable for both large and small orchards. It is better to use yellow net in mountainous area and red net in plain area. In areas with frequent hail, the grid size should be adjusted and the hail and bird prevention nets should be combined. However, the cost of bird proof net is high, and its service life is short. The fruit must be collected every year after harvest, which is labor-intensive. Moreover, it is easy to be aged and cracked by the hot sun and wind and rain erosion.
3. Bird repellent
In recent two years, intelligent voice bird repellers have been used in some areas [www.jdhsh. COM /]. According to reports, the intelligent voice bird repellent system can achieve sustainable and effective wide area bird repelling in orchards, farmland and fish ponds, with a maximum effective area of 3.3 hectares (50 mu). At present, it has been successfully applied to cherry, medlar, grape, pear, apple, bayberry, millet and other crops, with good bird repellent effect.
4. Bird repellent
It is a kind of perfume which can be used to disperse the bird's crown. It can be used as a kind of perfume for bird's central nervous system.
5. Camphor pill repels birds
In general, the smell of camphor pills can last up to 15 days, which can make birds afraid to get close to the fruits. Camphor pills with good quality and strong smell should be selected and hung in the higher places of fruit trees. The quantity of high-quality camphor pills should be determined according to the size of the orchard. Camphor pills should be packed into small bags with gauze, and each bag should be placed with 3-4 grains. When peach, pear, grape and other fruits are about to mature, or bagged fruits are removed, they are hung on the top of the tree tops. Generally, each fruit tree can hang 1-2 bags To prevent bird damage.
Gaolimin County, Fujian Province