Scientists' understanding of soil fertility has caused many people to have no understanding of soil fertility. What is soil fertility in the end? What are the characteristics of soil fertility? The soil nutrient tester is a scientific instrument developed and designed by Zhejiang Top Instrument for the determination of soil nutrients and soil fertility in agricultural growth. Today we talk about the different understanding of soil fertility. Phylogenetics (1974) on soil fertility compiled by the Yunnan Forestry College states: “The soil has the ability to provide the nutrients, moisture, and rooting conditions required for forest growth, and is called soil fertility.†and states that “soil fertility is not elusive, it It is represented by various physical, chemical, and biological characteristics of the soil.†This concept of soil fertility is based on the book Soil (1965), edited by the Ministry of Agriculture of the People's Republic of China: The ability to meet the conditions for eating (nutrition), drinking (moisture), and living (building a foothold) that are needed for crop growth in a timely manner is called soil fertility.†Prepared. The book “Chinese Soil†(1978), edited by the Nanjing Institute of Soil Science, Chinese Academy of Sciences, states that the concept of soil fertility is: “The ability of the soil to supply and coordinate plant nutrition and environmental conditions.†This concept of soil fertility produces fertility. The reason boils down to two conditions. At the same time, it is also considered that “soil fertility is a comprehensive reflection of the physical, chemical, and biological properties of the soil.†Also based on its relationship to plant growth, the soil fertility factor is “divided into two aspects: nutritional and environmental factors. Nutrients are nutritional factors, temperature and air are environmental factors, and water is both environmental and nutritional factors." In Shenyang Agricultural College, "Agricultural Soil Science", in I.Lieberoth's "Polology and Soil Fertility" and in "Chinese Soil" book, both have the regulation properties of soil as a sign of soil fertility. In addition, there is a strong emphasis on understanding the fertility of the soil economically, such as F. Seheffer, P. Sehaehtsehabel (1976), who believes that soil fertility means: “The ability of the soil to serve as a plant site and to produce plant harvests.â€
STONE WORKING Cnc Router
This cnc router is designed for stone working, could cut, engrave and drill on marble, granite, travertine, limestone, onyx, soapstone, slate, quartzite etc, suitable for fireplace, countertop, sink, desk in kitchen, bathroom, residential, hotel, office building etc.
Advantages of Stone Cnc Router:
Product Application:
4. Engraving characters, letters, pattern, intaglio, rilievi, handwriting, ancient calligraphy, abraziune colored drawing, flat carving colored drawing, etc. on stone, glass, depth can control optionally, to reach the artistic effect.
Main Features:
★ 1 spindle, 2 spindles or 3 spindles available upon request.
Technical parameters:
Items
Parameters
Working area(mm)
1300*2500*200mm/1200*1200mm, etc.
Table Structure
T-slot table
Transmission system
X,Y axis Gear Rack transmission,z axis Ballscrew from Taiwan but with German technology
Lead rail system
Linear round guide rail
Spindle power
5.5 kw Water-cooling ,3.175/4/6/12.7mm
spindle speed
0-24000 rpm
Motor
stepper(Panasonic/Yaskawa optional)
Drive
Dust collector system
For your option
Inverter
7.5kw Fuling inverter
Software environmant
Windows 98/2000/XP
Control System
DSP A11/Mach3/Nc-studio controller
Compatible file formats
G code; *.u00 ; *.mmg ; *.plt .
Compatible CAD/CAM Softwares
Ucancam V8 / Type3 / Artcam /
Working Voltage
AC380V,3ph, 50Hz
Precision
0.005mm
Max speed
26.0m/min
Max engraving speed
18.0m/min
Max feeding height
200mm
Work-holding devices
by fixture
Interface type
USB
Warranty guarantee
One-year after-sale services
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2. Such as granite stone can be layered engraving to 3mm.
3. Marble, bluestone can be engraving to 3mm on time.
★ The special designed Zaxis, can increase the stone relief accuracy, can solve the Zaxis belt or ball screw breaking problem thoroughly.
★ The water proof and dust proof system for X Y Zaxis, can protect all the parts, reduce the machine fault, enlarge the life time.
★ High-performance driven motor to ensure that the machines high speed and accuracy.
★ Using well-known domestic brands of water-cooled brushless spindle, low noise, strong cutting ability, to ensure the long time working.
★ Easy to use Mach 3 controller works with all industry standard CAD/CAM software(optional, Nc-studio, DSP controller)
★ High grade Hiwin square rail
★ XY axis German helical rack and pinion
★ Z axis high precision TBI ball screw
★ 900*1500mm, 1300*1800mm, 1300*2500mm, 1500*3000mm,1800*2500mm standard sizes (Special sizes available upon request.)
stepper(Panasonic/Yaskawa/hybrid optional)
Different understanding of soil fertility