Drought is one of the most commonly studied environmental stress factors. The increase of carbon dioxide concentration, the reduction of plant transpiration loss, the enhancement of water conservation capacity of plants, and the more pronounced performance in arid environment. Certain plants grown under conditions of high concentrations of carbon dioxide under drought stress maintain a longer period of physiological function than those grown under normal concentrations. Experts believe that the increase in carbon dioxide concentration will reduce the stomatal conductance of the leaves, thus reducing the loss of water from transpiration. However, the experimental study observed the opposite result and found that the stomatal conductance of plant needles growing under normal atmospheric carbon dioxide concentration showed a slight negative correlation with carbon dioxide concentration, and showed a slight positive correlation under water stress conditions. . In a water-restricted environment, increased concentrations of carbon dioxide may allow plants to alleviate drought stress. Plants grown at high carbon dioxide concentrations are able to compensate for water stress better than similar plants at low carbon dioxide concentrations.
The CO2 measuring instrument developed and produced by Top Instrument Co., Ltd. is compact and beautiful, easy to carry, touch buttons, large-screen dot-matrix liquid crystal display, easy operation, full Chinese menu operation, simple and convenient operation, allowing you to more accurately grasp the air carbon dioxide concentration .
Door Frame Roll Forming Machine, Steel Door Frame Machine, Steel Door Frame Forming Machine, Door Frame Making Machine
Parameter:
1.Suitable to process:Colored Steel plate, galvanized board
2.Width of the plate: depends to drawing
3.Roller stations: depends to drawing
4.Rolling material: Forging Steel 45#
5.Rolling galvanization thickness:0.05 mm
6.Material of the cutting blade :Cr12
7.Hydraulic oil :40#
8.Dimensions: depends to drawing
10.Thickness of the plate:0.3-0.6mm
11.Productivity:8-10m/min
12.Diameter of the roller:70mm
13.Weight:About 3 T
14.Voltage:380V 50Hz
15.Processing precision : within 1.00mm
16.Transportation:one complete machine need one 40feet container to hold
17.Payment term:30%deposit,and balance before delivery
Door Frame Roll Forming Machine
Door Frame Roll Forming Machine, Door Frame Making Machine, Door Frame Machine, Steel Door Frame Machine, Door Frame Forming Machine
Botou Xianfa Roll Forming Machine Factory , http://www.rollformingmachinecn.com