1, the choice of insect protection net
Insect nets is a new type of agricultural cover material, common specifications have 25, 30, 40, 50 mu, etc., has a different color such as white, silver, should be based on various fruit trees, the purpose of application of insect nets cover to select different types of insect nets, generally for the purpose of insect-resistant, select 25 white insect nets, to prevent the frost, fruit drop, heavy rain, for the purpose of prevention can choose 40 eyes white insect nets, can according to the production and the production practice around the different types of insect nets.
2, insect protection network coverage
Divide shed type and cover type 2 kinds.
Shed type is to directly cover the insect net on the shelf, around with mud and bricks compaction, between the pipe (frame) with card groove buckle, leaving the main door of the shed cover, easy to enter the shed operation and management, mainly suitable for blueberries, arbutus and other high-value fruit cultivation applications.
Bell type is the insect nets cover directly on the fruit trees, the use of bamboo, with mud around in real, can be single or multiple strains, single or multiple lines, all with insect nets, simple operation, greatly saves the rack material and save investment, defect is artificial operation management inconvenience, this way is suitable for short-term, seasonal frost, rain, sound proof, etc., such as citrus fruit maturation and loquat young fruit stage anti frost, waxberry, blueberries in the mature fruit flies and prevent birds harm and so on.
3. Cover time of insect proof net
According to the purpose and requirements of different fruit insect nets cover, determine the corresponding insect nets cover time, such as citrus fruit mature period of frost prevention, request before frost (cold) covering the insect nets, normally starts in late October or early November cover, such as Yang mei fruit mature fruit flies and the heavy rain, usually 1 month before the fruit mature cover insect nets, namely the occurrence peak in May.
4, insect protection network coverage management
Before the cover of pest control net, especially the cover type, the orchard should do a good job in fertilization, pest control and other field management work.
During the covering period, the mesh chamber shall be sealed, compacted around, and the roof and the surrounding area shall be buckled with a clamp groove. In case of wind of grade 5-6 or above, the mesh wire shall be pulled to prevent lifting.
Usually in and out of the shed to close the door, to prevent pests fly into the shed, and often check whether there is a tear in the net, once found, to repair in time.
Such as insect net for fruit frost, before frost, insect net and fruit to be separated, in order to avoid fruit close to the insect net caused by frost losses.
After the end of coverage, it is necessary to wash the insect-proof net with fresh water in time, and store it in the warehouse after it is dried for repeated use.