For more than 10 years, the physical properties of agricultural non-woven fabrics translucent, thermal insulation, moisture retention and comprehensive cold-proof data on the results of research and non-woven overwintering cabbage, lettuce, spinach and shed early spring Melon covered cultivation, with extremely significant to promote growth, early maturity, winter leafy vegetables 2 to 4 times, improve the quality of the product, discussed the non-woven fabrics in the production of a wide range of applications.

Non-woven fabrics, as agricultural cover materials, foreign countries have been from the 70's, compared with plastic film not only has a certain light, heat preservation, but also has the characteristics of breathable and moisture absorption. With non-woven fabric covered directly in the open or protected in the cultivation of vegetables, with cold, frost, wind, pest control, anti-bird, drought and insulation, moisture effect, winter and spring cold winter vegetables to achieve stable production, a new cultivation technique for high yield, good quality cultivation and regulation supply.

In ancient Chinese traditional agriculture, the winter has the use of man-made posts directly covered in winter vegetable plants (or noodles), to prevent the habit of cold frost, agricultural non-woven straw instead of cold and frost, is China's traditional agriculture to modern agriculture another example of change.

China started to introduce agricultural nonwovens from Japan in 1983 and has been researched and applied in the production, teaching and research departments of some big cities. Since the end of 1990, we have used the non-woven fabrics (20 g / m 2, 25 g / m 2, 30 g / m 2 and 40 g / m 2) as the cold-proofing material in open-field vegetable cultivation and greenhouse vegetable cultivation in winter and spring. The coverage performance and application results, the results are as follows:

Covering performance of agricultural nonwovens during the winter and spring, with the agricultural nonwovens of different specifications and varieties produced. The results As follows: Light transmittance to cover the way, using the JD-3-type light meter, the measured transmittance as shown in Table 1, the best light transmittance of 20 g / m2, 30 g / m2 followed by 40g and 25 g / m2 viscose fabric light transmittance is poor. This result is measured in the winter season when the solar elevation angle is small. In fact, the solar incident angles vary with different seasons and times, and the measured light transmittance will be different. From the results of this test, the test samples Covered crops to meet the lighting needs. Breathability and plastic sheeting impermeable compared to non-woven fabric has a breathable, after the cover does not have to cover ventilation, saving labor, the size of the ventilation rate and the size of non-woven fabrics, the temperature difference between inside and outside the cover, wind speed.