In recent years, the types and number of pests and diseases that damage winter jujube have shown an upward trend. Adopting technical measures during the dormancy period of winter jujube can effectively prevent and treat diseases and insect pests, which has a multiplier effect.
It is necessary to carry out chemical prevention and control in the growing season of winter jujube, but the chemical prevention and control investment is large, the labor is expensive, and it is easy to cause pesticide residues, which is also contrary to the requirements for the production of green fruits. According to the overwintering characteristics of winter date diseases and insect pests, combined with the dormancy management of winter date, targeted prevention and treatment can have a multiplier effect.
The dormancy period of Dongzao dates from early November to early March of the second year. During this period, there are mainly wintering diseases (insects) such as red spider, blind stink bug, ring rot, and date rust. In order to prevent the diseases such as date rust, green-lipped mycosis, and date moths from overwintering in the litters or weeds under the trees, jujube trees should be cleaned in time after the fallen leaves, and the dead branches, rotting fruit, and weeds should be removed from the park. Clean up and burn centrally or buried deep underground.
In terms of knobs, there are usually two types of entrances and exits for all types of buildings.One is the key door handle lock.This is a simple door handle that includes an internal lock, which is operated by inserting a key into the lock part.Turning the key can lock and unlock the door, effectively restricting those who have the key from entering the building.Keys are not allowed to be inserted. This type of door handle lock relies on a smaller handle located in the middle of the door handle.Turn this small handle to the left or right to lock or open the door.This type of knob is usually used in the master bedroom or bathroom of a private house. The electronic version of the knob lock has also been widely used.
A key doorknob lock. This is a simple doorknob that includes an internal lock that is operated by inserting a key into the lock component. Turning the key makes it possible to lock and unlock the door, effectively limited access to the building to those who have keys that fit the lock.This is the oldest and most common form of knob lock in the world today.
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