1. Grape bagging can prevent and reduce fruit diseases.
The bagged grape fruit is isolated from the outside world by the fruit bag, and the physical method is used to block the transmission of bacteria from other objects to the ears and fruits, reduce the infection opportunities of diseases and pests on the fruit, and effectively prevent the occurrence frequency and degree of black spot, anthrax, white rot, downy mildew, etc. on the grape fruit.
2. Grape bagging can reduce the use of pesticides and pesticide residues. After bagging, various pesticides shall not be sprayed on the grape fruit. Especially, if the pesticide used after bagging has no internal absorption, the sprayed pesticide will not affect the fruit basically; If it is an internal absorption agent, the amount of the agent transmitted to the grape fruit will also be greatly reduced. Therefore, bagging grapes will greatly reduce pesticide residues in fruits, which is an important measure to produce safe food and increase trust in agricultural products, with far-reaching significance. Practice has proved that in the growing season of grapes, the disease prevention link of bagged grape cultivation can reduce the use of drugs 4-5 times.
3. Grape bagging can improve fruit surface finish.
After bagging, the grape fruit is in a small environment relatively isolated from the outside world. The temperature, humidity and light intensity are relatively stable, and the aging of the epidermal cells, cuticle and cell wall cells of the fruit is delayed; At the same time, the fruit in the bag can avoid the pollution of wind, rain, dust and chemicals, the erosion of mosquitoes, flies, pests and birds. The bagged grape fruit surface is smooth, the fruit powder is thick and uniform, and the appearance quality is improved.
4. Improve the rate of excellent fruits and increase economic benefits.
For bagged grape fruits, flower and fruit thinning, inflorescence and ear thinning should be carried out before bagging, which can greatly improve the excellent fruit rate of grape fruits; Secondly, grape fruit bagging can significantly improve the appearance quality and commodity value of grape fruit.
5. Grape bagging can reduce fruit cracking after use.
The degree of cracking of grape fruit is firstly related to the variety, secondly to the environmental conditions, mainly the water conditions. For grape varieties with serious fruit cracking, fruit bags can prevent the skin from directly absorbing water, while maintaining the relative stability of the ambient humidity around the fruit grains, which can reduce the degree of fruit cracking.
6. Grape fruit bags have a certain protective effect against bird damage and hail.