At present, there is no unified conclusion about when corn enters the reproductive growth stage, which restricts the accurate simulation of corn growth and photosynthetic product distribution. The leaf area measurement instrument found that when the last leaf of a maize plant is fully grown, it is the fertilizing period of the female corn flower, which can be regarded as the turning point sign of the transition from vegetative growth to reproductive growth of the corn. The leaf area index (LAI) reflects the crop community. The important indicator of area change.
The leaf area measuring instrument research proposed that the maximum LAI is the sign that corn enters the reproductive growth stage, which avoids the error caused by using the specific growth period to judge the corn entering the reproductive growth stage. Combined with the index of maximum leaf area index of spring maize and the dynamic universal model of spring maize leaf area index, the dynamic date of maximum leaf area index and leaf area index of spring maize can be determined, which provides a basis for accurate simulation of leaf growth and photosynthetic product distribution of spring maize. .
Combined with the direct measurement values ​​of the leaf area meter, a dynamic universal model of the relative leaf area index of spring maize was constructed to avoid differences in the leaf area index due to different maize varieties, sowing dates, planting densities, and cultivation measures, and thus to be able to Accurately reflect the changes in the leaf area index of spring maize during the growth period.
PVC double-color jelly air-blowing molding machine Operation Manual
This machine is specially applied to manufacture single color, double color slippers sandals and leisure shoes with PVC or TPR. Its features are as follows:
1. Full computer controlling, humanized man-machine interface , operating panel is concise;
2. Compared with the same kind of equipments, it saves electricity and increases efficiency;
3. Compared with the same kind of equipments, it has larger injection capacity and clamping force;
4. the rotation of station is characterized by continuously variable speed, has light noise and be steady;
5. Preparing and injection device are controlled proportionally, besides, the speed, material capacity and pressure are adjustable, which ensures the quality of products;
6. Can use it to manufacture single color, double color slippers sandals and are free to choose stations to work according to different requirements of products;
Technical Parameters
Item
Unit
Parameters
Raw material
---
PVC
Injection Capacity(Max)
cm3
565;495
Heating Power
kw
10; 7
Temperature Controling
point
4
Screw diameter
mm
φ65;φ60
Screw Speed
r.p.m
0-200
Rated injection pressure
Mpa
85;75
Injection Stroke(Max)
mm
200
Motor power
kw
18.5; 15
Clamping Force
KN
80T
Mold Size(Max)
mm
450*220*280
PVC Moulding Machine For Shoes
PVC Moulding Machine For Shoes,PVC Air-Blowing Molding Machine,Automatic PVC Molding Machine,PVC Moulding Machine
SHIJIAZHUANG LONGXUAN TRADING CO., LTD , http://www.longxuanmachine.com