The insect-proof net has both the function of shading a […]
The insect-proof net has both the function of shading and the function of preventing insects, and is a new material for preventing pests in vegetable fields. The insect-repellent net is mainly used for raising and cultivating vegetables such as Chinese cabbage, Chinese cabbage, summer radish, broccoli, cauliflower, and solanaceous fruits, melons, beans, etc. in summer and autumn, which can increase the emergence rate, seedling rate and seedling quality. The technology of using insect nets is introduced as follows:
(1) The vegetable insect-proof net is directly covered on the large scaffolding frame, and the surrounding area is compacted with soil or bricks, and fastened with a film line on the net, leaving the front door uncovered. (2) Bending into a small arch frame with bamboo or steel bars, inserting it into the surface of the field, and covering the insect net with the insect net, and then pouring it directly on the net, until the harvest is not uncovered, and the whole closed cover is implemented. . (3) Covered with horizontal scaffolding.
Must cover all life
The insect-proof net has less shading, and it is not necessary to cover the night cover or the front cover, and it should be covered all the way. It does not give the pests an opportunity to invade, in order to receive a satisfactory insect-proof effect.
After the previous harvest, the residues and weeds of the former cockroaches were removed from the field in time and burned intensively. 10 days before the construction of the shed, the water was flooded and the vegetable noodles were flooded for 7 days, drowning the eggs on the surface and underground pests and aerobic bacteria, then removing the accumulated water, letting the sun shine for 2-3 days, and spraying the pesticides on the whole field. insect. At the same time, the insect-proof net should be compacted and sealed to prevent pests from sneaking into spawning. When the small arch shed is covered and cultivated, the arch shed should be higher than the crop, and the vegetable leaves should be kept close to the insect net, so as to prevent the pests such as the yellow stripe jumping net from the net from eating the leaves and laying eggs on the leaves.
Choose the right aperture
Pay attention to the aperture when purchasing the insect net. Vegetable production should be 20-32 mesh, and the width is 1-1.8 meters. White or silver-gray insect nets work better. If the shading effect is enhanced, a black insect net can be used.
Comprehensive supporting measures
In the cultivation of insect-proof nets, it is necessary to increase the application of decomposed pollution-free organic fertilizers, select heat-resistant and disease-resistant varieties, biological pesticides, and non-polluting water sources, and adopt comprehensive measures such as micro-spraying technology to produce high-quality vegetables without pollution.
After the use of the insect-proof net in the field, it should be timely received, washed, blown, and rolled to extend the service life, reduce the depreciation cost, and increase economic benefits.
Insect net technology
The insect net is a new type of agricultural covering material. It is made of high-quality polyethylene as raw material, adding anti-aging, anti-ultraviolet and other chemical additives. It is woven by wire drawing and looks like window screen. It has the characteristics of tensile, heat resistance, water resistance, corrosion resistance, non-toxic and tasteless. The correct storage life can reach 3-5 years. In addition to the advantages of the shade net, the vegetable insect net has the biggest feature of preventing insects and preventing diseases and greatly reducing the amount of pesticides. It is a key technology for pollution-free vegetables and a simple, scientific and effective pest control measure.