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The main application areas of non-woven fabrics in agriculture

by:XINYU Non-woven     2022-02-11

1. Covering materials

Europe in spring and autumn has a complicated climate. Plants in glass conservatories are affected by frost and may die in severe cases. The traditional solution is to use 'floating cover technology'. It is to directly spread the light and light-transmitting covering material on the plants to provide effective, cheap and temporary climate protection for the shoots. Prevent frost plants and make them grow as usual.

The non-woven fabric has light transmittance. Transparency and permeability to air and water make it an ideal covering material for plants. The non-woven fabrics in use have a gram weight between 8 and 25g/m', and they can increase the ground temperature and crop temperature by 2 to 4°C. This protects crops from spring and autumn frosts (until this, porous polyethylene films have been used).

Compared with polyethylene film (plastic), agricultural non-woven fabric has the following advantages.

1) Good permeability to water and chemical treatment agents

2) Good resistance to infrared radiation, ensuring suitable ventilation in warm spring, thereby reducing the risk of 'heat stroke' (so Wei ' 'Heatstroke' means that the leaves of the shoots are scorched and withered due to the high temperature, which ultimately affects the quality and yield of vegetables.)

3) Due to the special structure of agricultural non-woven fabrics, the uniformity of the wind is improved penetration.

4) It can protect against human invasion by parasites such as insects.

Ventilation, thereby reducing the risk of 'heat stroke' (the 'heat stroke' is that the shoots and leaves are scorched and withered due to too high temperature, which ultimately affects the quality and yield of vegetables.

Second, heat insulation

Non-woven fabrics can be used in glass greenhouses to replace other materials used for heat insulation, and can also be aluminized to enhance their reflective properties. This application has the following advantages.

1) It can be folded, occupying less space and preventing the loss of light in the greenhouse.

2) Due to its permeability, it prevents the 'condensation' effect that damages the growth of crops.

3) Due to the special structure of agricultural nonwovens, the uniform penetration of wind is improved.

4) It can protect against human invasion by parasites such as insects.

Three, shading

The non-woven fabric can be used as a shading screen for various light-phobic plants. According to the different characteristics of plants, non-woven fabrics with different weights and colors can be selected. For example, in the United States, black non-woven fabrics are usually used as light screens for nurseries; in Europe, green non-woven fabrics are used to shade broad-leaved vegetables, and in Japan, gray is used to shade ginseng.

Four. Sterilization and insecticide

In northern Europe and the United States, because these countries have strict restrictions on the use of vegetable insecticides, so. After the non-woven fabric is chemically treated, it is floated on the vegetables, which not only kills insects and sterilizes, but also prevents different predators (animals and birds) and parasites (flies, insects with viruses, etc.) from affecting crops. It also prevents the pollution of vegetables and the surrounding environment due to pesticides.

V. Various agricultural bags

In order to prevent the invasion of insects when the fruit is ripe, and protect the high quality. High-value fruits, using the breathable properties of non-woven fabrics, can be used as fruit protective bags instead of paper. It can also be used as a pollination bag for plants, a root bag or other agricultural bags according to the purpose.

6. Seed substrates

In terms of rice growth and slope greening, non-woven fabrics can be used as seed substrates. Specifically, seeds are sown on non-woven fabrics in advance, and various fertilizers, pesticides and other nutrients are added directly to the seeds or seedlings. Among them, the non-woven fabric can be simply flat on the ground. This technology not only improves the germination rate of seeds and improves the growth of seedlings, but also simplifies the sowing operation and procedures and reduces the labor intensity.

VII. Irrigation cloth

In the pure nutrient solution culture method, non-woven fabric is used as a very thin layer of irrigation cloth to improve the distribution of nutrient solution. It is also possible to use a thicker sheet as a growth substrate on which a flowerpot or container can be placed to utilize the water absorption of the nonwoven substrate to promote an even distribution of water.

VIII. Covering materials

In many cases, when plants are grown in containers, black non-woven fabrics must be covered on the ground to prevent weeds from growing. It is water-blocking and osmotic, so any excess water can be expelled. In the United States, bonsai gardeners take advantage of this property of nonwovens. Substitute pine bark as bonsai cover material to ensure the aesthetic properties of the green space.

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