JPH0725011Y2 - Agricultural net - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to an agricultural net used for cultivating agricultural products such as strawberries, tea and shiitake mushrooms.

(B) Conventional Technology In the cultivation of the above-mentioned agricultural products, there has already been a method of coating the agricultural products with an agricultural net in order to protect the agricultural products from frost and snow.

However, if the air with high temperature and high humidity stays in the covering space of the above-mentioned agricultural net all the time, it has a bad influence on the growth of agricultural products. At the same time, it is necessary to take in fresh air on the atmosphere side into the coating space to maintain the coating space in an environment and temperature suitable for growing crops.

As an agricultural net that enables this, conventionally, there is an agricultural net having a structure in which the central part of the net is denser than both side parts (for example, Japanese Utility Model Publication No. 63-38753 and Japanese Utility Model Publication No. 48-961).
42 publication).

However, in the case of this conventional structure of the agricultural net, since the dense portion of the central portion has only dense texture at the ends, it is not possible to obtain a sufficient heat insulating effect in the central portion, which is favorable. There is a problem that it is not possible to grow agricultural products.

(C) Problem to be solved by the invention This invention is a net which can discharge excess warm air and moisture accumulated in the covering space of the agricultural net and take in fresh air on the atmosphere side into the covering space. An object of the present invention is to provide an agricultural net which has a high heat insulating effect and a heat retaining effect without impairing the heat retaining effect while having a structure.

(D) Means for Solving the Problems This invention is to knit a net body with a flat yarn made of a synthetic resin, and knitting a portion of the net body corresponding to the upper part of the covering in a dense state by dense knitting. A net for agricultural use in which a portion is formed and a portion corresponding to the side portion of the coating of the net body is knitted in a rough state to form a coarse knitting portion, wherein the dense knitting portion is formed of two flat yarns. A feature of the agricultural net is that each of the knitted bodies is knitted, and a bag-shaped space is formed by superposing these on the front and back.

(E) Action This invention is an example of a covering, in which the entire outer peripheral surface of an agricultural product such as tea trees or shiitake mushrooms is covered with the densely knitted part of the agricultural net and the upper part of the agricultural product so as to correspond to each other. During the period, due to the high heat insulation effect of the bag-shaped space portion due to the double structure of the densely knitted body, the temperature drop in the coating space is prevented with a high heat retention effect, and the ingress of cold air and the warm air in the coating space are prevented. Prevents escape and protects covered crops from frost and snow.

On the other hand, the excess warm air and moisture accumulated in the covering space of the agricultural net is discharged from the coarse knitting part knitted in a coarse state corresponding to the side part of the agricultural product, and the fresh air on the atmosphere side is discharged from this coarse knitting part. Is introduced into the coating space to maintain the coating space in an environment and temperature suitable for growing crops.

(V) Effect of the device In this device, the dense knitting part covering the upper part of agricultural products such as strawberries, tea and shiitake mushrooms is composed of a bag-like space part due to the double structure of the knitted body. High heat insulation effect and high heat retention effect can be obtained, and even if the lower part of the agricultural product is ventilated from the coarse knit part of the agricultural net, the high heat retention state can be maintained for a long time without being affected by this ventilation .

As a result, by covering the agricultural net according to the present invention with the agricultural products, the densely knitted portion in the dense state positively prevents the ingress of cold air and escape of warm air, and prevents the temperature drop in the covering space. It is possible to obtain a heat-retaining effect and to surely protect these agricultural products from frost and snow.

At the same time, by releasing excess warm air and moisture in the coating space from the coarse knitting part knitted in a rough state, it is possible to save the labor of opening the hem of the agricultural net in order to lower the temperature in the coating space,
It is possible to maintain an environment and temperature suitable for growing crops such as tea and shiitake mushrooms, and improve the growth and quality of these crops for early shipment.

(G) Embodiment of the Invention One embodiment of the invention will be described in detail below with reference to the drawings.

The drawings show an agricultural net used for covering tea plants as an example of a covering, and in FIGS. 1 and 2, the agricultural net 1 is a transparent or translucent tape-like synthetic material such as nylon or vinylon. A wide flat yarn 2 formed by expanding a resin film to the maximum width is used for many wefts, and a tape-shaped synthetic resin film made of the same material is folded in two in the length direction to form a semi-transparent narrow width. The flat yarns 3 are used for a plurality of warp yarns, and the flat yarns 2 and 3 of the weft yarns and the warp yarns are plain woven to knit two knitted fabrics 4 and 5, respectively.

Next, the above-mentioned knitted fabrics 4 and 5 are superposed on the front and back sides and extended to both sides of each of the knitted fabrics 4 and 5, and each flat yarn 2 of weft yarns
The net body 7 is knitted by intertwining and weaving a plurality of yarns 6 ... Made of synthetic resin such as polyethylene.

On the other hand, a large number of yarns 6 are provided on both sides of each of the above-mentioned knitted bodies 4 and 5.
By knitting integrally by, as shown in FIG.
A bag-shaped space 7a is formed in the center of the net body 7 corresponding to the upper part of the agricultural product.

In the central portion of the net body 7 corresponding to the upper part of the above-mentioned agricultural products, a large number of flat yarns 2 and 3 each having a wide tape width are plain-woven in a dense state to form semitransparent dense knitted portions 8.

On the other hand, on both sides of the net main body 7 corresponding to the side of the agricultural product, both ends of each flat yarn 2 which extends to both sides of the front and back knits 4 and 5 are folded in three in the length direction. Each narrow yarn that is folded and has a tape width narrower than that of the warp flat yarn 3
2a are formed respectively, and the narrow yarns 2a formed at both ends of each of the flat yarns 2 ... And the yarns 6 made of synthetic resin are entangled and woven in a coarse state, and each coarse knitted portion 9 is formed. , 9 are formed respectively.

Assuming that the illustrated embodiment is configured as described above, the usage state of the agricultural net 1 will be described below.

As shown in FIG. 3, the dense knitted portion 8 formed in the central portion of the agricultural net 1 is formed on the entire outer peripheral surface of the tea plant 10 planted in the tea plantation.
By covering the upper part of the tea plant 10 and the upper part of the tea plant 10 in correspondence with each other, at night or in the cold season, the dense knitting part 8 formed in the central part of the agricultural net 1 ensures the intrusion of frost or snow. In addition to the above, the outside cold air is prevented from entering the covering space S formed by covering the agricultural net 1 or the warm air inside the covering space S is positively prevented from escaping to the outside.

At the same time, due to the heat insulating action of the air layer held in the space 7a of the dense knitted portion 8 formed by superposing the two knitted bodies 4 and 5,
A heat-retaining effect of preventing a temperature decrease in the coating space S is obtained, and the amount of light necessary for growth is collected through the semitransparent dense knitted portion 8 or from the small stitches of the dense knitted portion 8.

On the other hand, the excess warm air and moisture accumulated in the covering space S of the agricultural net 1 is discharged to the atmosphere side from the coarse knitting portions 9 and 9 on both sides corresponding to the side portion of the tea plant 10, and at the atmosphere side. Since fresh air is taken into the coating space S from the respective coarse knitting portions 9 and 9 on both sides, it is not necessary to open the hem of the agricultural net 1 to lower the temperature in the coating space S, and the coating space S The inside can be maintained in an environment and temperature suitable for growing agricultural products such as tea.

In addition, the synthetic resin flat yarns 2 and 3 that compose the agricultural net 1 absorb moisture such as night dew and rainwater, and the tea plant 10
Water drops are prevented from dripping on the top, and by this water absorption action, the flat yarns 2 and 3 constituting the agricultural net 1 spread in the width direction when absorbing water, and the dense knitted portion formed in the central part of the agricultural net 1. 8 and the coarse knitting parts 9 formed on both sides,
By narrowing the stitches of 9, it is possible to positively prevent warm air and moisture in the coating space S from being discharged to the atmosphere side, and also to prevent rainwater from entering by narrowing the stitches.

In this way, by covering the entire outer peripheral surface of the tea plant 10 with the agricultural net 1, the dense knitted portion 8 in the dense state positively prevents the infiltration of cold air and the escape of warm air, and Along with the heat retention effect that prevents temperature drop, tea plant
The 10 can be surely protected from frost and snow.

Moreover, the excess warm air and moisture in the coating space S that covers the agricultural net 1 is released from the coarse knitting portions 9 and 9 on both sides,
It is not necessary to open the hem of the agricultural net 1 in order to lower the temperature in the covering space S, and the environment and temperature suitable for growing crops such as tea can be maintained, and the crops such as tea and shiitake mushrooms can be maintained. It is possible to improve the growth and quality of the product and ship it early.

In the correspondence between the structure of this invention and the above-mentioned embodiment, the covering of this invention is a tea plant which is an example of the agricultural product of the embodiment.
Although corresponding to 10, the present invention is not limited to the configuration of the above-described embodiment.

For example, the above-mentioned agricultural net 1 may be used for cultivating strawberries, shiitake mushrooms, etc., and each of these knitted bodies 4, 5 may be knitted by a flat yarn vapor-deposited with a metal material such as aluminum or a colored flat yarn. .

Furthermore, the agricultural net 1 of the present invention can be used as a covering material for lining or outside lining of a greenhouse.

[Brief description of drawings]

 The drawings show an embodiment of the present invention. Fig. 1 is a plan view of an agricultural net, Fig. 2 is an enlarged cross-sectional view of the agricultural net shown in Fig. 1, and Fig. 3 is a state of use of the agricultural net. FIG. 1 …… Agricultural net, 2,3 …… Flat yarn 4,5 …… Knit, 6 …… Yarn 7 …… Net body, 8 …… Dense knitting section 9 …… Coarse knitting section, 10 …… Tea tree

Claims (1)

[Scope of utility model registration request] 1. A net body is knitted with a flat yarn made of synthetic resin, and a portion of the net body corresponding to the upper part of the covering is knitted in a dense state to form a dense knitted portion.
A net for agriculture in which a portion of the net body corresponding to a side portion of a covering is knitted in a coarse state to form a coarse knitted portion, wherein the dense knitted portion is flat knitted and two knitted bodies are respectively formed. An agricultural net made by knitting and stacking these on the front and back to form a bag-shaped space.