Southern Xinjiang is one of the major producing areas of walnuts in China, while winter wheat is the main food crop in Daejeon. The widely adopted method in southern Xinjiang for a long time has been the production of nuclear wheat intercropping, but this method inevitably exists in the light of crop competition. Resources, moisture, nutrients and other resources, so in order to make full use of existing land resources to ensure the safety and stability of food production, then use the root system analysis system to study the root distribution characteristics of walnut-wheat composite system to understand how the walnut roots Distribution, walnuts and crops in the low part of what kind of competition exists between the nuclear wheat intercropping is a key scientific problem to be solved.
The root system was analyzed through the root analysis system. The spatial distribution of plant roots in the walnut-wheat composite system and the monocropping system was compared and the composite system was evaluated by the land equivalent method. The results showed that the root surface area density and root mass density of walnut and wheat in the composite system were smaller than that of walnut monocropping and wheat monoculture of the corresponding soil layer; the roots of 1a raw walnut and 2a raw walnut in 20~40cm soil layer in the composite system The surface area density was 30.36% and 26.18% lower than that of 1a raw walnut monocropping and 2a raw walnut monoculture; the wheat root surface density was 20~40cm deeper than that of 1a raw walnut intercropping and 2a raw walnut in composite system. Monocropping decreased by 23.7% and 59.2%; the root mass density of 1a raw walnut and 2a raw walnut in 0~40cm soil layer in the composite system and monocropping system was 75.31% of total root biomass in 0~100cm soil layer, 82.84 %, 76.76%, 83.23%; 0~40cm soil layer is the overlapping niche of walnut and wheat root system, which promotes the uneven distribution of root system in the composite system; the aboveground biomass equivalence ratio (1.620 and 1.617) of the composite system is greater than 1, Compared with the corresponding single cropping model, the land use efficiency is improved.
Air Shower Room And Cargo Shower Room
Application
Air shower is the necessary purification equipment for personnel to enter the clean room and dust-free workshop. It has strong universality and can be used with all clean rooms and clean workshops. When the staff enters the workshop, they must pass this equipment, with strong and clean air, sprayed from all directions by the rotating nozzle to the person, and effectively and quickly removed the dust, hair, hair debris and other debris attached to the clothes. It can reduce the pollution problem caused by people entering and leaving the clean room. The two doors of the air shower room are electronically interlocked, which can also act as an air gate chamber to prevent external pollution and unpurified air from entering the clean area. Prevent the staff from bringing hair, dust and bacteria into the workshop to meet the strict dust-free purification standards of the workplace.
Structure
1. The air shower room is composed of several parts, such as box body, stainless steel door, high efficiency filter, air blower, distribution box and nozzle.
2, the box is made of high quality steel plate, surface electrostatic treatment, beautiful and generous, the inner bottom plate is made of stainless steel plate friction resistance, easy to clean.
3, the main material and dimensions of the box body can be customized according to customer requirements.
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