The insect netting is shaped like a window screen, with high tensile strength, UV resistance, heat resistance, water resistance, corrosion resistance and aging resistance. It is non-toxic and tasteless, and its service life is generally 4-6 years, up to 10 years. It not only has the advantages of the shading net, but also overcomes the disadvantages of the shading net. It is worth promoting vigorously.
Function of insect netting
The young fruit stage and the mature fruit stage of fruit trees are in the low temperature season, which is easy to cause cold damage or freezing damage. The adoption of insect netting not only helps to improve the temperature and humidity in the net, but also prevents the frost injury on the fruit surface by using the isolation of the insect proof net, which has a very obvious effect on preventing the frost damage in the young fruit period of loquat and the cold damage in the mature period of citrus fruit.
After the orchard and nursery are covered with insect prevention nets, the occurrence and transmission paths of aphids, wood lice, fruit sucking Spodoptera, heartworms, fruit flies and other fruit pests are blocked, so as to achieve the purpose of preventing and controlling these pests. In particular, it can control the harm of aphids, wood lice and other virus vectors, and play an important role in preventing and controlling the spread of Citrus Yellow Dragon disease, decay disease and other diseases, as well as pitaya fruit and blueberry fruit flies.
Fruit dropping prevention
The fruit ripening period is in the summer with heavy rain. If the insect netting is selected, it will reduce the fruit drop caused by heavy rain during the fruit ripening period, especially in the years with heavy rain during the fruit ripening period of pitaya, blueberry and bayberry.
Improve temperature and light
Covering insect prevention net can reduce the light intensity, adjust the soil temperature and air temperature and humidity, and reduce the precipitation in the net room, reduce the water evaporation in the net room, and reduce the transpiration of leaves. After covering the insect net, the relative humidity of the air was higher than that of the control. The humidity in rainy days was the highest, but the difference was the smallest and the increase was the lowest. When the relative humidity in the net room is increased, the transpiration of fruit trees like citrus leaves can be reduced. Water affects fruit quality and development through precipitation and air relative humidity. When it is more conducive to fruit growth and development, the fruit quality is better.
Cultivation of leafy vegetables covered with insect netting
Leafy vegetables are the favorite vegetables for urban and rural residents in summer and autumn. They have the characteristics of fast growth and short cycle. However, there are many pests and serious pesticide pollution in open production, and the citizens dare not eat them. Remind you to use insect proof net to cover cultivation can greatly reduce pesticide pollution.
Covering cultivation of melon and fruit with insect proof net
Melons and fruits are prone to virus disease in summer and autumn. After the application of insect prevention net, the virus transmission path of aphids is cut off, and the harm of virus disease is reduced.
From June to August every year, it is the breeding season of autumn and winter vegetables. It is also a period of high humidity, heavy rain and frequent insect pests. It is difficult to raise seedlings. After using the insect prevention net, the vegetable emergence rate is high, the seedling rate is high, and the seedling quality is good, so as to win the initiative of autumn and winter crop production.
Covering method of insect netting on fruit trees
the scaffolds shall be built, and the scaffolds shall be fastened with clamps, and the insect prevention net shall be covered on the scaffolds. The ground shall be compacted with cement, and the front of the shed shall be left with doors.
The insect prevention net is directly covered on the fruit trees and supported by bamboo poles. It can be covered by a single plant or multiple plants at the same time. It is easy to operate and reduces expenses. However, it will cause inconvenience in field operation and management. It is mainly suitable for short-term and seasonal frost prevention, rainstorm prevention, bird damage prevention, etc. if it is to prevent frost and fruit flies and birds in the mature period.
Key points of use
The insect prevention net is easy to use, but the following points should be noted.
Must be covered throughout the period
Insect proof net blocks light. However, there is not much light, so it is not necessary to cover it day and night or cover it before and after. The whole process shall be covered. Both sides shall be compacted with bricks or soil. The satisfactory pest control effect can be achieved only when the opportunity of pest invasion is not given. Under general wind conditions, the pressure wire can be used. In case of strong wind of force 5-6, it is necessary to pull the net pressing wire to prevent the net from being lifted by the strong wind.
Select appropriate specifications
The specifications of insect prevention net mainly include width, aperture, color, etc. In particular, the aperture and the number of insect prevention nets are too small, and the mesh is too large, so the insect prevention effect cannot be achieved. Too many meshes, too small mesh, although insect proof, but poor ventilation, resulting in high temperature, too much shading, is not conducive to crop growth. Generally, 22-24 mesh insect prevention net should be selected. In spring and autumn, compared with summer, the temperature is lower and the light is weaker, so white insect prevention net should be selected; In summer, black or silver gray insect prevention net should be selected to give consideration to shading and cooling; In areas where aphids and virus diseases are serious, silver gray insect prevention nets should be selected in order to drive away aphids and prevent virus diseases.
Comprehensive supporting measures
In addition to insect prevention net coverage, combined with comprehensive supporting measures such as disease and insect resistant improved varieties, heat-resistant improved varieties, pollution-free organic fertilizers, biological pesticides, pollution-free water sources, micro spraying and micro irrigation, better results can be achieved.
Seeds, soil, plastic shed or greenhouse skeleton, frame materials, etc. may contain pests and eggs. Before planting crops, the seeds, soil, shed framework and frame materials must be treated with insect control after the insect control net is covered. This is the key link to ensure the cultivation effect of the insect control net, and prevent a large number of pests and diseases from occurring in the net room and causing serious damage. Some farmers also choose thiamethoxam (aktai) + azoxystrobin (amixida) + Jiamei bonus 1000 times liquid to irrigate their roots, which has also played a good role in preventing the outbreak of stinging mouthparts.
Select the varieties suitable for planting in the net room, pay attention to the row spacing and plant spacing during the planting process, and plant sparsely. The fruit trees shall be covered with shading net, the soil shall be deeply cultivated, and the amount of basic fertilizer applied, such as rotten farm manure and compound fertilizer, shall be sufficient.
Proper use and storage
After the use of the insect prevention net in the field, it should be collected in time, washed, dried and rolled to extend the service life.