Determination of Different Seeding Periods of Peanut Using Leaf Area Meter

Green leaf is an important and important carrier for photosynthesis of peanuts. The size of leaf area is an important reference index and influencing factor for biomass and yield. Changes in peanut yield can be caused by changes in density, fertilization, or sowing time. In order to increase the yield, we should pay attention to the control and grasp of these aspects during the planting process. Apply the leaf area measuring instrument to measure the area of ​​the leaf area in time and do the above work to make the peanut green leaves suitable for photosynthesis.

The leaf area index is parabolic with the birth process. It develops slowly at the seedling stage. After entering the flowering needle stage, the leaf area develops faster, reaches the peak during the scab, and then slowly declines. The difference in leaf area index between different fertilization levels was significant. The treated plants grew slowly, and the growth was slow, so the leaf area index was small. The treatment had a large amount of fertilizer, although the field leaf area index was larger, but the leaves were closed and not ventilated. Impervious to light, there is premature fading of functional leaves and affects yield.

Too large or too small density is not conducive to the dynamic development of reasonable leaf area index. At a density of 165,000 plants/hm2, the highest leaf area index was 4.25, which failed to make full use of light energy and the population yield was low. When the density was 195,000 plants/hm2, the highest leaf area index measured by the leaf area meter was 5.96. And can maintain a long time, can make full use of light energy, good ventilation and light transmission, so the highest output. At a density of 21.0 thousand plants/hm2, the leaf area index at the end of the crop period reached 7.39, and then declined rapidly at the fruit ripening stage. This was due to the fact that the density was too large and the shade was severe, resulting in premature leaf decline.

For different sowing dates, the measured value of the leaf area measuring instrument in each period has a certain gap. At the same time, with the delay of the sowing date, the leaf area index will naturally decrease, but the maturity of the sowing date will be delayed. Increasingly, this is mainly due to the fact that the leaves of peanuts have basically lost their ability to photosynthesis during the mature period, and therefore the leaf area will gradually decrease.

Advertising Cnc Router


  • UTECH CNC take great pride in manufacturing the most user-friendly, high quality, economical advanced Cnc Routers.
  • UTECH Advertising CNC Router adopt overall steel body, Linear Guide Rails and Ball screws, it provides long lifetime, superior cutting and engraving quality, while requiring minimal maintenance.
  • UTECH CNC Routers are easy to learn and operate, the control system of CNC Router is compatible with Type3/Artcam/UG/Pro-E/Mastercam/Ucancam V9 and so on.


Just for the perfect experience. Strength represents everything.


Machine design advantages and concepts:

1.Side hanging structure, 20 square rail and precision ball screw transmission mode, with high precision and efficiency, operate steadily.
2.The structure of the whole machine adopts gantry movable column structure design, full range of precision machining parts and precision assembly, maintain machine's high performance and stability.
3.Control system fully open port, powerful compatibility seamless docking with various software.

4.Suitable for multi-industry accurate customer groups, comprehensive, delicate and easy to learn.


Performance Characteristics:


A. The imported high precision ball screw with high precision is used to minimize the clearance during the movement.
B. The drive uses a premium brand drive, which is nearly 2 meters faster than the original model.
C. Imported square guide rail, self-lubricating block, make all directions force equal, guaranteed mechanical precision and strength.
D. Use the memory method of the breakpoint to ensure that it can be processed in an accident (broken knife) or in the next day.
E. Gantry type movement, strengthen mesa, strong and durable, long time use not deformation, make positioning accuracy more accurate.(optional)
F. The label making not only makes the engraving fine and not serrated, the bottom surface is smooth and smooth contour, and the cutting of 2 cm organic glass is also easy.
G. The whole process of thickening casting bed, three-axis dustproof system, high power stepping motor.

H. This machine is very suitable for application in small mould, stamping die, motor, micro injection mold, shoe mold, badges, embossing mold, bread, cake, abrasive, biscuit, chocolate, candy mold, art sculpture, dial, font, font, all kinds of marks, trademarks or other processing.


Machine's parameters:


Number

Discription

Parameter 

1

X,Y,Z Working Area

600x900x100mm

2

Table Size

720X1140mm

3

X,Y,Z Traveling Positioning Accuracy

±0.01/300mm

4

X,Y,Z repositioning Positioning Accuracy

±0.01mm

5

Table Surface  

T-slot table

6

Frame

Steel structure

7

X, Z Structure

Ball Screw

8

Y Structure

PMT Rail Linear Bearings and Ball Screw

9

Max. power Consumption 

0.8Kw(without spindle)

10

Max.Rapid Travel Rate

8000mm/min

11

Max.Working Speed

5000mm/min

12

Spindle Power Motor

1.5KW water cooling spindle

13

Spindle Speed

0-18000RPM

14

Drive Motors

Stepper system 

15

Working Voltage 

AC220V/50/60Hz 

16

Command Language

G code

17

Operating System

Nc-studio System (Mach3/DSPSoftware)

18

Interface

USB

19

Flash Memory

128M(U Disk)

20

Collet

ER11

21

X,Y Resolution

 <0.01mm

22

Software Compatability

Artcam software, JDPaint software,( 1513427,Option: Ucancam/Type3 software)


cnc router for MDF acrylic plastic

cnc acrylic plastic PVC cutting machine


mini cnc router 6090

Advertising Cnc Router

Advertising Cnc Router,CNC Wood Working Router,Metal Advertising Router Machine,Mini Advertising Cnc Routers

Shandong U-May CNC Technology Co., Ltd. , http://www.fiberlasers.de

Posted on