CN106577557A - Application of nylon embossing membrane to preparation of loosening eggs of silkworms - Google Patents

Abstract

The invention relates to the field of silkworm breeding, in particular to the application of nylon embossed film in silkworm loose egg seed production. The nylon embossed film is used as an egg-laying material for silkworm loose egg seed production, which saves a lot of money for silkworm loose egg seed production. time, reducing material costs and significantly improving economic efficiency.

Description

Application of Nylon Embossed Film in Seed Production of Bombyx mori Loose Eggs

technical field

The patent of the present invention relates to the field of silkworm seed production, in particular to the application of nylon embossed film in silkworm loose egg seed production.

Background technique

For the safety of reproduction, the eggs laid by insects have a kind of egg jelly, so that the eggs laid can be attached to objects such as leaves to avoid damage from bad weather. The same is true for silkworms. Silkworm eggs have just been laid with a layer of gelatin, so that they can have better adhesion properties. A key step in the breeding of silkworm hybrids is the seed production link. For a long time, the material used for silkworm seed production is silkworm paper or egg-laying cloth. Sizing means brushing a layer of paste on the silkworm paper or soaking the cloth in the paste to cover the surface with a layer of paste. After the eggs are laid, the eggs are removed by soaking in water. The process is complicated, time-consuming and labor-intensive. Time is particularly tight for the production of timely pickling species that require tight production time.

How to realize the natural shedding of silkworm eggs and improve the efficiency of seed production is a technical bottleneck to be solved urgently by workers studying silkworm breeding. So far, there are no reports on the materials or techniques related to the natural deovulation of silkworm eggs.

Contents of the invention

The present invention provides the application of nylon embossed film in silkworm loose egg seed production, realizes the purpose of silkworm egg production and natural deovulation, saves the process of sizing and deovulation in the process of silkworm egg seed production, saves time and effort, and greatly The efficiency of silkworm loose egg seed production is improved.

The technical scheme that the present invention adopts is as follows:

The application of nylon embossed film in the seed production of silkworm loose eggs is characterized in that: the embossed nylon film is applied to the seed production process as an egg-laying material, specifically, the nylon embossed film is used in the seed production process of silkworm timely pickling and loose eggs. The grain film is used as an egg-laying material to replace the traditional silkworm paper or egg-laying cloth to complete the seed production of silkworm loose eggs.

The embossing density of the nylon embossed film is 180/cm ² .

The inventor proves that the material has no toxicity to silkworm eggs through comparative tests on nylon membranes with various embossing density specifications and silkworm egg hatching rate tests.

Beneficial effect

The present invention adopts the embossed nylon film as the egg-laying material, which can realize the purpose of natural deovulation of silkworm eggs or light brushing of silkworm eggs. The traditional method of using ordinary silkworm-linked paper requires sizing and de-egging to collect eggs after laying eggs, which is time-consuming and laborious, and the silkworm-linked paper can only be used once, and the cost is relatively high. With nylon embossed film, silkworm eggs can be collected immediately after laying eggs, without the need for sizing and de-egging processes, and the nylon embossed film can be reused for several years after use. Compared with ordinary silkworm paper, for every 10,000 silkworm moths (200 boxes of species), the use of nylon embossed film can save two days of sizing and deovulation labor and 200 yuan of egg-laying material costs (see Table 1). The use of nylon embossed film greatly improves the efficiency of silkworm loose egg seed production and reduces the cost.

Table 1 The amount of labor and material costs required for different materials (10,000 silkworm moths)

detailed description

Nylon embossed membranes with different embossing densities and traditional silkworm paper were selected as the egg-laying materials to compare and study the amount of eggs laid and the attachment rate.

1. Experimental materials

a. Nylon embossed film with different embossing densities in the size of 30cm*30cm;

b. Silkworm moth species: Dazao.

2. Experimental method

1.1 Nylon embossed membranes with different embossing densities are used as egg-laying materials for the preparation of loose eggs

After the mating of silkworm chrysalis and moths, the male and female moths are disassembled, and the female moths are vibrated to make them fully urinate, and then the moths are cast on the above-mentioned intercepted nylon embossed films with different embossing densities of 30cm*30cm to lay eggs.

1.2 Investigation of attachment rate of embossed films with different embossed densities to silkworm eggs

According to method 2.1, the attachment rate of silkworm eggs was investigated 2, 12, and 24 hours after laying eggs.

1.3 Investigation on hatching rate of silkworm eggs by nylon embossed membranes with different embossed densities

The silkworm eggs collected at different times were pickled in time to investigate the hatching rate.

1.4 Effects of nylon embossed films with different embossed densities on the attachment rate of silkworm eggs

In order to investigate the effect of nylon embossed membranes with different embossed densities on the attachment rate of silkworm eggs and to clarify the deovulation effect of materials with different densities, we randomly divided silkworm moths after mating (exhausted moth urine) into 5 groups, each group containing 3 groups (three repetitions), 10 silkworm moths in each group. The five groups include material groups 1, 2, 3, 4 and the control group (the egg-laying material used is common silkworm paper). The 3 groups set up 2, 12, and 24-hour silkworm egg collection groups respectively. Silkworm moths start timing when they lay eggs for 1 hour, and collect and count on time. The results are shown in Table 2.

Table 2 Effects of nylon embossed films with different densities on egg laying and attachment rate of silkworm

The results in Table 2 show that the materials of nylon embossed membranes with different embossing densities have no significant impact on the number of eggs laid by silkworm moths compared with the control group, and the shedding effect of silkworm eggs is significantly different. The greater the embossing density, the better the shedding effect, and the embossing density When the density is 132/cm2, the relative adhesion rate is 24%, and when the density reaches 180/ ^cm2 , the relative adhesion rate is 0, that is, no silkworm eggs adhere.

Remark:

The embossing density is the number of embossings per unit area of the embossed film,

The number of eggs laid and the number of silkworm eggs adhered at different times after laying eggs are the average values of three repeated groups,

Fecundity index = the average value of the experimental group / the average value of the control group * 100,

Relative adhesion rate = the number of eggs laid by sticking/the number of eggs laid*100.

3.2 Effects of nylon embossed membranes with different embossing densities on the hatching rate of silkworm eggs as oviposition materials

In order to investigate the effect of embossed film on the hatching rate of silkworm eggs and to determine whether the embossed film material is toxic to silkworms, we soaked non-adhered silkworm eggs collected at different times in time, and placed the silkworm eggs after pickling at a temperature of 25 ℃, 80% humidity conditions, after 11 days of greening, the number of ants was investigated, and the hatching rate was calculated. The results are shown in Table 3

Table 3 Effect of nylon embossed film with different densities on silkworm hatching rate

The results in Table 3 show that the hatching rate of silkworm eggs collected from materials with different embossing densities in the experimental group has no significant difference compared with the control group, indicating that the material has no effect on the hatching of silkworm eggs.

4 Conclusion

The results of this experiment showed that the nylon embossed film with an embossing density of 180 pieces/cm2 or more can be used as a good oviposition material for silkworm loose egg seed production. The process of sizing and deegging is omitted, time and effort are saved, and the efficiency of silkworm loose egg seed production is greatly improved.

Claims (2)

1. application of the nylon graining film in the silkworm variety production of hybrid seeds, it is characterised in that：Embossing nylon membrane is answered as spawning material In using production of hybrid seeds technique.

2. application of the nylon graining film according to claim 1 in the silkworm variety production of hybrid seeds, it is characterised in that：

The embossing density of described nylon graining film is 180/cm² 。