Novel overwinter crop cold-proof quilt

Abstract

The utility model relates to a novel overwinter crop cold-proof quilt which is mainly composed of aluminum foil reflective films, polyethylene cloth and black expandable polyethylene sheets, and an outer layer is composed of two aluminum foil reflective films with the same length and width. The back surfaces of the aluminum foil reflective films are respectively adhered to one surface of polyethylene cloth with the same length and width through a film spraying process to form a reinforcing layer; and two pieces of polyethylene cloth with the same length and width are respectively and centrally bonded on two surfaces of a middle black expandable polyethylene sheet with the same length and slightly narrower than the polyethylene cloth on one surface without the bonded aluminum foil reflective film through a film spraying process to form a heat preservation layer. And meanwhile, the heat-insulating film has the advantages of being good in heat-insulating effect, low in price, waterproof, moisture-proof, high in toughness, light in weight, convenient and easy to cover and open in two-way operation and the like, is deeply welcomed by vast farmers, and has a wide market application space.

Description

TECHNICAL FIELD

[0001] The present application relates to an agricultural production material, in particular to a novel wintering crop cold protection quilt. BACKGROUND

[0002] Freezing injury is one of the main meteorological disasters in agriculture, and has a great threat and influence on the agricultural and forestry industry. Freezing injury is the injury caused by the freezing of water in crops at a temperature below 0℃. Freezing injury is generally divided into frost and wintering period freezing injury. Frost generally refers to the phenomenon that after the temperature of crops drops below 0℃ and the water in crops freezes, the water, mechanical, and osmotic stress on crops exceeds the bearing capacity of the crops, and the crops cannot recover after the temperature rises and cause injury or death. Wintering period freezing injury refers to the phenomenon that crops lose the ability of physiological activity due to long-term exposure to low temperature environment below 0℃ during the wintering period, causing plant injury or death, and common occurrences include wintering crop freezing injury, fruit tree freezing injury, and economic forest freezing injury.

[0003] The specific internal mechanism of freezing injury is as follows: firstly, low temperature can reduce the activity of enzymes and disturb the normal metabolism and activity of crops; secondly, it changes the structure and composition of cell membranes, especially the thylakoid membrane related to light reaction, affecting the absorption, transmission, and conversion of light energy; thirdly, it also causes the freezing of intercellular space, which is divided into intracellular freezing and extracellular freezing, both of which affect the fluidity of protoplasts and vacuoles, and extracellular freezing leads to the freezing of intercellular water, both of which cause mechanical damage and secondary drought; finally, it causes cell and tissue injury, and in severe cases, crop death. It can be said that the accumulation of ice crystals and the increase of ice crystals during freeze-thaw cycles are the direct causes of crop freezing injury. In addition, there is a common freezing injury in the north called "Huan Yang freeze", which usually occurs during the freeze-thaw transition period in spring, and is often in a sunny place with sufficient sunlight and warm in the middle of the day. When the soil temperature appears to be suitable for crop germination, the wintering crops may start to recover their life activities, especially when the soil temperature continuously appears warm, the wintering crops recover their life activities quickly. However, in most cases, the temperature drops sharply at night, and the soil temperature returns to subzero, resulting in freeze-thaw alternation, which can cause serious damage to wintering crops and "Huan Yang freeze". The reason for the freezing injury is that when the temperature is relatively high, the protoplasts start to move, and then the temperature drops too low, causing the protoplasts in the crop cells to freeze, the ice crystals pierce the cell membrane and cause cell damage, and after melting, the protoplasts flow out of the cells, the cells lose activity, and the protoplasts may sublimate and the liquid water may evaporate, finally leading to the dehydration and death of the crop cells. "Huan Yang freeze" causes great losses to wintering economic crops in the north every year, and the problem of "Huan Yang freeze" needs to be solved urgently in practical production.

[0004] At present, the blueberry cultivation area in China is growing rapidly. Because the branches of blueberry trees are very weak and the xylem is thin, they are prone to freeze damage and branch breaking under the action of low temperature and wind in winter. Therefore, it is very important to prevent cold in winter in the north. The common method for preventing cold in production practice is to press the branches and bury them in the soil, that is, before winter, the blueberry plants are first tied with a rope and then pressed to one side in a creeping manner, then covered with plastic cloth and buried with soil. In the spring, the blueberry plants are dug out of the soil, and then the cultivation bed needs to be leveled again. Although this method can achieve a certain cold prevention purpose, the operation amount is very large, and the damage to the blueberry plants is also very large, and the labor cost is particularly high. Due to the lack of labor, large-scale cultivation areas appear "labor shortage" in autumn, which seriously affects the production quality and benefit of blueberry and restricts the development of large-scale cultivation of blueberry. Therefore, the problem of overwintering and cold prevention of blueberry trees needs to be solved. At the same time, China has a vast territory, and the cultivation area of economic crops such as grapes and cantaloupes in cold regions such as Xinjiang is very large. The method of winter cold prevention is similar to that of blueberry, and it is difficult. The production and development of some overwintering crops are seriously threatened, and they are in a very unfavorable situation of high labor intensity, unstable effect and high operation cost. Therefore, a simple and practical new product for overwintering crop cold prevention is urgently needed in practical production. SUMMARY

[0005] In view of the above problems, the present application designs a relatively simple but very practical product according to the basic principles of thermodynamics, which better solves the problem of freeze damage of overwintering crops. The technical scheme adopted is: a new type of overwintering crop cold protection quilt mainly composed of aluminum foil reflecting film, polyethylene cloth and black expandable polyethylene sheet, characterized in that: the outer layer is composed of two aluminum foil reflecting films with the same length and width, the back surface of the aluminum foil reflecting film is adhered to one side of the polyethylene cloth with the same length and width by a coating process to form a reinforcing layer, and the two polyethylene cloths with the same length and width are centrally adhered to both sides of the middle black expandable polyethylene sheet with the same length and slightly narrower than the polyethylene cloth by a coating process to form a heat preservation layer, and the two edges of the polyethylene cloth with a width slightly wider than the middle black expandable polyethylene sheet are adhered together.

[0006] The mechanism of the new overwintering crop cold protection quilt for preventing freeze damage is: the aluminum foil on the outer surface has a reverse radiation effect on the outside world, which can greatly reduce the invasion of solar energy and the changing temperature of the outside world into the small environment of the wrapped crops, avoid the phenomenon of freeze-thaw alternation, and achieve the effect of relatively stable internal temperature; the cold protection quilt can realize reverse radiation heat dissipation to achieve the effect of heat preservation, reverse water loss to achieve the effect of moisture retention, and reverse heat dissipation to achieve the function of maintaining the relative stability of the internal temperature of the wrapped crops, thereby achieving the function of freeze damage prevention.

[0007] The lining process is that polyethylene is changed into liquid flow glue by high temperature, coated on the surface of the carrier by professional roller equipment, and after the treatment of cooling equipment, the flow polyethylene is uniformly and firmly combined with the carrier.

[0008] The fact that the novel overwintering crop selects the black expandable polyethylene sheet is verified by years of practice. The black color added in the expandable polyethylene can absorb the trace of light transmitted by the aluminum foil reflective layer, and has the function of enhancing the temperature insulation effect. The double polyethylene cloth reinforcing layer can not only increase the cold prevention effect, but most importantly, can effectively enhance the durability of the cold prevention quilt in the wild rough use environment. At the same time, in the process of processing the product, the edges of the two double polyethylene cloths are bonded together, which can well protect the expandable polyethylene layer which is not resistant to aging in the middle and further strengthen the overall effect of the product.

[0009] The novel overwintering crop is in the form of continuous length coiled material, and the width thereof is determined according to the use requirement in actual application.

[0010] The use method of the novel overwintering crop is that the crops needing cold prevention are covered in the novel overwintering crop, and the periphery is buried with soil to make the protected crops in a specific small environment, so that the moisture retention and heat preservation effects can be achieved, and the purpose of safe overwintering of crops is realized.

[0011] Through a large number of experiments, the novel overwintering crop has the advantages of good temperature insulation effect, low price, water and moisture resistance, high toughness, light weight, and convenient and simple bidirectional operation of covering and opening, and the like. The producer is freed from the traditional traditional branch pressing and soil burying method which is heavy in operation and poor in cold prevention effect, so the novel overwintering crop is deeply welcomed by the majority of farmers and has wide market application space. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 A structure diagram of a novel overwintering crop cold prevention quilt;

[0013] Mark: 1, aluminum foil reflective layer; 2, polyethylene cloth; 3, black expandable polyethylene sheet. DETAILED DESCRIPTION

[0014] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments, and the exemplary embodiments according to the present application are described. However, these exemplary embodiments can be implemented in various different forms, and should not be interpreted as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided in order to make the disclosure of the present application complete and complete, and to fully convey the ideas of these exemplary embodiments to those skilled in the art, and the thickness of the layers and regions is exaggerated in the drawings for the sake of clarity.

[0015] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are intended to provide further explanation of the application as claimed. The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:

[0016] Referring to Figure 1 It can be seen that the new wintering crop cold protection quilt is mainly composed of five functional layers of two layers of aluminum foil reflective film 1, two layers of polyethylene cloth 2 and one layer of black expandable polyethylene sheet 3. The outer layer is composed of two pieces of aluminum foil reflective film 1 with the same length and width. The back surface of the aluminum foil reflective film is adhered to one side of the polyethylene cloth 2 with the same length and width by a coating process to form a reinforcing layer. The two pieces of polyethylene cloth 2 with the same length and width are adhered to the two sides of the middle black expandable polyethylene sheet 3 with the same length and slightly narrower than the polyethylene cloth by a coating process to form a heat preservation layer. The two pieces of polyethylene cloth with a width slightly wider than the width of the middle black expandable polyethylene sheet are adhered together, which can well protect the middle expandable polyethylene layer which is not resistant to aging, and can further strengthen the integrity of the new wintering crop cold protection quilt.

[0017] When using the new wintering crop cold protection quilt of the application, first clean the soil surface of the cultivated crops of dry branches and weeds, etc. and dig out the buried soil ditch around. After the external temperature has been below zero, cover the cold protection quilt before heavy snowfall, and then bury the cold protection quilt around with soil. Because the wintering crops enter a hibernation state at the beginning of winter, they generally do not produce "Huangyangfeng", so it is not necessary to immediately cover the cold protection quilt. A small amount of snowfall is beneficial to sealing the soil pores, maintaining the flatness of the ground, and maintaining the soil moisture in the coming year. If there is heavy snowfall, the cold protection quilt should be covered after removing most of the snow.

[0018] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A new type of wintering crop cold protection quilt, mainly composed of aluminum foil reflective film, polyethylene cloth and black expandable polyethylene sheet, characterized in that: The outer layer is made of two pieces of aluminum foil reflective film with the same length and width, the back of the aluminum foil reflective film is respectively bonded on one side of the same length and width of polyethylene cloth to form a reinforcing layer, the two pieces of polyethylene cloth with the same length and width are respectively bonded in the middle of the two sides of the same length and slightly narrower than the width of the middle black expandable polyethylene sheet without bonding the aluminum foil reflective film to form a heat preservation layer, and the two edge wide parts of the two pieces of polyethylene cloth which are slightly wider than the width of the middle black expandable polyethylene sheet are bonded together.

Images