CN203181661U - Mycorrhiza research simulation device for leguminous and graminaceous crop intercropping cultivation - Google Patents

Abstract

The utility model relates to a mycorrhizal research simulation device for leguminous and gramineous intercropping cultivation, which belongs to the field of mycorrhizal technology; the device includes a PVC round pipe, a card slot, a nylon net, a cultivation room, a circular bottom plate, and a small hole; the device is Drum type, made of PVC round pipe, along the diameter of the PVC round pipe from the bottom up to the top 2cm, there is a longitudinal card slot, the nylon net is fixed in the card slot, the PVC round tube is divided into two cultivation rooms, and polychlorinated Sealed with vinyl adhesive, the upper end of the device is open, and the bottom end is closed with a circular bottom plate, and there are small holes in the middle of the bottom of the two cultivation chambers. The utility model is used to study the mycorrhizal structure of gramineous crops as the host, especially the absorption and utilization of nitrogen and phosphorus in legume planting soil by mycelia, and at the same time, it eliminates the competition of leguminous and gramineous crop roots for nutrients absorption, the utility model has the advantages of simple structure, low cost and strong practicability.

Description

A simulation device for mycorrhizal research of leguminous and gramineous intercropping cultivation

technical field

The utility model relates to a mycorrhizal research simulation device for the intercropping cultivation of legumes and grasses, which belongs to the technical field of mycorrhizae.

Background technique

Crop intercropping is one of the traditional agricultural planting modes in my country. It can make full use of light, heat, water, and soil resources to increase the crop yield in the system. With the severe challenges of global issues such as resources, environment, and food, intercropping has once again attracted widespread attention of scientists. Among them, leguminous/gramineous intercropping is a combination of tall and dwarf plants, and leguminous crops such as soybeans can carry out biological nitrogen fixation, and gramineous crops such as corn have strong mycorrhizal tolerance, so this intercropping reflects The advantages are more obvious in the utilization of nutrients such as phosphorus.

At present, there are many studies on the competitive absorption and utilization of nutrients such as nitrogen and phosphorus by roots under the condition of leguminous/gramineous intercropping through fine pot simulation experiments such as using different root separation methods. Li Shumin et al. (Chinese Journal of Ecological Agriculture, 2005, 13 (3 ): 136-139) Using simple plastic pots to combine mycorrhizal factors into the legume/grass intercropping system to study the competition for root phosphorus uptake, but the plastic pot intercropping device may have bonded nylon mesh It is difficult and the sealing effect is not very good, and the growth of the root system may also be affected by the shape of the plastic pot with a wide top and a narrow bottom during crop planting and cultivation.

Therefore, in order to better distinguish the role and contribution of mycorrhizal mycelium and root system to the activation and utilization of soil nitrogen, phosphorus and other nutrients in the leguminous/graminaceous intercropping system, it is urgent to improve and innovate the materials and designs used in the above-mentioned devices.

Utility model content

In view of the above problems, the utility model provides a mycorrhizal research simulation device for leguminous and gramineous intercropping cultivation, which is used to study the mycorrhizal structure of gramineous crops as the host, such as mycelium's effect on nutrients such as nitrogen in the leguminous planting soil. , the absorption and utilization of phosphorus, and eliminate the competitive absorption of nutrients by the roots of leguminous and gramineous crops. At the same time, the utility model has the advantages of simple structure, low cost and strong practicability.

In order to realize the purpose of the utility model, the technical solution adopted in the utility model: a mycorrhizal research simulation device for leguminous and gramineous intercropping cultivation includes a PVC round pipe 1, a slot 2, a nylon net 3, a cultivation room 4, and a circular bottom plate 5. Small hole 6; the device is barrel-shaped, made of PVC round pipe 1, and a longitudinal slot 2 is provided along the diameter of the PVC round pipe from the bottom up to the top 2 cm, and the nylon mesh 3 is fixed in the slot The PVC round pipe is divided into two cultivation chambers 4, and is sealed with a polyvinyl chloride adhesive. The upper end of the device is open, and the bottom end is closed with a circular bottom plate 5, and there are small holes 6 in the middle of the bottom of the two cultivation chambers.

The diameter of described PVC pipe 1 is 16～20 cm, and height is 23～25 cm.

The PVC round pipe 1 is divided into four layers, the height from top to bottom is 3 cm for the first layer, 8 cm for the second layer, 8 cm for the third layer, and 4 to 6 cm for the fourth layer.

Described nylon mesh 3 adopts the nylon mesh of 30 μm aperture.

The diameter of the small hole 6 is 0.5-1.0 cm.

The PVC round pipe 1, the card slot 2, the nylon net 3, and the circular bottom plate 5 are all commercially available common components.

Beneficial effects of the utility model: the utility model is used to study the mycorrhizal structure of the host of gramineous crops, especially the absorption and utilization of nitrogen and phosphorus in the planting soil of leguminous plants by mycelia. The root system of undergraduate crops competes to absorb nutrients, and the utility model has the advantages of simple structure, low cost and strong practicability.

Description of drawings

Fig. 1 is the structural representation of the utility model;

In the figure: 1-PVC round pipe, 2-card slot, 3-nylon net, 4-cultivation room, 5-round bottom plate, 6-small hole.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and embodiments, so as to facilitate the technical personnel's understanding.

As shown in Figure 1: a mycorrhizal research simulation device for leguminous and gramineous intercropping cultivation comprises PVC round pipe 1, draw-in groove 2, nylon net 3, cultivation chamber 4, circular bottom plate 5, small hole 6; The barrel type is made of PVC round pipe 1, which is easy to obtain materials and reduces costs. In order to facilitate fixing, it does not use the method of cutting up and down, but along the diameter of the PVC round pipe from the bottom up to the top 2 cm. Longitudinal draw-in slot 2, nylon net 3 is fixed in the draw-in slot and the PVC round pipe is divided into two cultivation chambers 4, and seal with polyvinyl chloride adhesive, the upper end of the device is open, and the bottom end is closed with a circular bottom plate 5. There are small holes 6 in the middle of the bottom of the cultivation chamber.

The diameter of described PVC pipe 1 is 16～20 cm, and height is 23～25 cm.

The PVC round pipe 1 is divided into four layers, the height from top to bottom is 3 cm for the first layer, 8 cm for the second layer, 8 cm for the third layer, and 4 to 6 cm for the fourth layer; 3 cm, 1 cm higher than the top of the nylon net, so that the soil can be prevented from entering another cultivation room from one cultivation room due to water splashing, wherein the soil is contained in the second, third and fourth layers, The two cultivation chambers 4 are filled with sterilized soil, and the soil is steam sterilized at 120°C for 2 hours after passing through a 2mm sieve, and then dried in the air.

Described nylon mesh 3 adopts the nylon mesh of 30 μ m apertures, and the mycelium of mycorrhizal fungus can pass through like this, and root system can not pass through and is limited in the growth space respectively.

The diameter of the small hole 6 is 0.5 ~ 1.0 cm, so as to facilitate water and air permeability.

When the utility model is in use, one of the two cultivation chambers 4 is planted with gramineous plants inoculated with mycorrhizal fungi (the middle layer soil is mixed with about 30-50 g of mycorrhizal fungal agents), and the other cultivation chamber is planted with legumes. After the seeds of legumes and grasses are sterilized with hydrogen peroxide, germinated, and sown with a thin layer of soil, a thin layer of sterilized quartz sand is sprinkled on top to reduce water evaporation. After emergence, keep 3~4 plants and 2~3 plants of leguminous plants and gramineous plants respectively, maintain suitable soil moisture content by weighing method and watering distilled water, and store them in a greenhouse or under certain temperature, humidity and light conditions. Sampling or harvesting can be done after 2 to 3 months of cultivation in greenhouses or artificial climate chambers. Because the utility model is equipped with nylon nets, the root system is limited to grow in the two cultivation chambers 4, and mycorrhizal hyphae can pass through the nylon nets to the side chambers. Absorb nutrients in the soil to achieve the purpose of separating the root absorption zone.

The utility model is used to study the mycorrhizal structure of gramineous crops as the host, especially the absorption and utilization of nitrogen and phosphorus in legume planting soil by mycelia, and at the same time, it eliminates the competition of leguminous and gramineous crop roots for nutrients absorption, the utility model has the advantages of simple structure, low cost and strong practicability.

The utility model is illustrated by the accompanying drawings. Without departing from the scope of the utility model, various transformations and equivalent substitutions can be made to the utility model patent. Therefore, the utility model patent is not limited to the disclosed specific implementation process. , but should include all the implementations that fall within the scope of the utility model patent claims.

Claims (5)

1. A mycorrhizal research simulation device for leguminous and gramineous intercropping cultivation, characterized in that: the device comprises a PVC round pipe, a draw-in groove, a nylon net, a cultivation chamber, a circular bottom plate, and a small hole; the device is a drum type, Made of PVC round pipe, there is a longitudinal card slot along the diameter of the PVC round tube from the bottom up to the top 2 cm, the nylon net is fixed in the slot to divide the PVC round tube into two cultivation rooms, and glued with polyvinyl chloride Sealant, the upper end of the device is open, the bottom end is closed with a circular bottom plate, and there are small holes in the middle of the bottom of the two cultivation chambers. 2. A mycorrhizal research simulation device for leguminous and gramineous intercropping cultivation according to claim 1, characterized in that: the diameter of the PVC round pipe is 16-20 cm, and the height is 23-25 cm. 3. The mycorrhizal research simulation device of a kind of leguminous and gramineous intercropping cultivation according to claim 1, it is characterized in that: the PVC circular pipe is divided into four layers, and the height from top to bottom is successively the first layer of 3 centimeters, The second layer is 8 cm, the third layer is 8 cm, and the fourth layer is 4~6 cm. 4. the mycorrhizal research simulation device of a kind of leguminous, gramineous intercropping cultivation according to claim 1, it is characterized in that: nylon net adopts the nylon net of 30 μm aperture. 5. A mycorrhizal research simulation device for leguminous and gramineous intercropping cultivation according to claim 1, characterized in that: the diameter of the small hole is 0.5-1.0 cm.