Different understanding of soil fertility

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.”

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:

  • Three axises adopt imported linear orbit, two line sliding track, heavy loading, stable working, high precision, longlife time.
  • Whole seamless weld steel structure, wheels on cnc router table, not easy to distort, the table back lining is armor plate, good rigidity, the machine can bear 1 MT at least.
  • Constant power spindle and motor, strong cutting capacity, high efficiency,Well compatibility, compatible software CAD/CAM, such as Type3,  Artcam, Castmate, Wentai, CorelDraw.


Product Application:


1. Suitable for natural marble, granite, bluestone, sandstone, artificial stone, tombstone, milestone, ceramic tile, jade, crystal, ceramics, glass, plastic, wood, bamboo, cambered surface, sphere, stainless steel, iron, copper, aluminum, titanium alloy, can doing 3D embossment, and line engraving, beveling, drilling 2D engraving.
2. Such as granite stone can be layered engraving to 3mm.
3. Marble, bluestone can be engraving to 3mm on time.

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:


★ Heavy duty Machine structure, good weight bearing capacity, not easy to deformation, the special machine bed design, can bearing more than 2000kgs materials.
★ 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.)

★ 1 spindle, 2 spindles or 3 spindles available upon request.


stone engraving machine

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

stepper(Panasonic/Yaskawa/hybrid optional)

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


stone cnc router for engraving marble


stone cnc router for granite marble

Professional Stone Cnc Router

Professional Stone Cnc Router,Stone Cnc Router,Stone Engraving Machine,Stone Engraving Equipment

Shandong U-May CNC Technology Co., Ltd. , http://www.sesamecnc.com