Special heat insulation film net for keeping activity of tea leaves through nanotechnology

Abstract

The invention discloses a special heat insulation film net for keeping activity of tea leaves through a nanotechnology, and belongs to the field of agricultural planting equipment. The membrane net comprises a plurality of net wires which are arranged in parallel; the adjacent net wires are tightly attached to form at least part of the net; the net wire comprises a plurality of arc-shaped sheets which are distributed from inside to outside in a sleeving manner; the arc-shaped piece located on the outermost layer is exposed in the air to be irradiated by sunlight, and the outer surface of each arc-shaped piece is coated with a reflecting film with the uniform thickness. The thicknesses of the reflecting films of different arc-shaped sheets are different; at least one tangential direction on the surface of each reflecting film is vertical to the sunlight irradiation direction; the reflecting film is made of a material which is a wave density medium relative to air, the wavelength of infrared rays in the reflecting film is lambda, and the thickness of the reflecting film is 1 / 4 lambda; a gap penetrating through the two sides of the net wire is formed between the arc-shaped pieces of each net wire so that air can flow; stable cooling of the air temperature and the leaf temperature at the canopy surface of the tea tree can be achieved.

Description

technical field [0001] The invention belongs to the field of agricultural planting equipment, and more particularly relates to a special heat insulating film net for maintaining the activity of tea leaves by nanotechnology. Background technique [0002] The canopy micro-domain environment of tea trees is lower than the growth of tea, which has a huge impact; the climate environment of low temperature, high humidity and low light is conducive to the improvement of tea quality; while the summer and autumn tea in flat tea gardens are often due to continuous high temperature, low humidity and dry heat. , strong light environment is not conducive to the growth of tea. [0003] In order to improve the quality of tea in summer and autumn, tea growers often cover the surface of the tea tree canopy with an insulating net. The sunlight isolated by the heat insulation net is mainly infrared light with longer wavelength, and infrared light has a thermal effect, so infrared isolation is...

AI Technical Summary

Problems solved by technology

[0004] However, ordinary heat insulation nets are insulated by physical isolation to avoid light penetration; some heat insulation nets are coated with reflective films to reflect infrared rays; light has the nature of waves and can penetrate a certain thickness The heat insulation net, and the surface of the heat insulation net is uneven after it is spread out. When the light shines on the heat insulation net, the amount of light that can be reflected is uncertain. Only at the angle of vertical irradiation can half-wave loss occur. , to reflect infrared rays away, such a setting will lead to low efficiency of reflecting infrared rays; and the manufacturing cost of the reflective film is high, such a setting will lead to low material utilization

[0005] In addition, due to the sun exposure in the morning, the heat insulation net itself absorbs a certain amount of heat and becomes a heat source; in the afternoon, the tea tree with the heat insulation net has no obvious cooling effect compared with the tea tree without the heat insulation net; Because the tea trees covered with heat insulation nets receive insufficient ground heat during the day, there is not much heat around the tea trees at night, which will cause the environment of the tea trees to be too cold.

[0006] In addition, the bottoms of most heat insulation nets are flat, and the heat generated by sunlight during the day is relatively high, which is not conducive to the formation of water vapor in the air, and has little positive effect on the increase in humidity of tea trees.

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