Physiological indicators of plants are greatly affected by soil moisture. Soil water potential is more representative than soil moisture in describing soil drought. This is because soil water potential is a function of soil moisture and texture. Studies have shown that, under drought stress, the growth rate of fruit trees decreased, photosynthetic rate, stomatal conductance and transpiration intensity decreased. When the roots of fruit trees are in a state of full water supply for a long time, the growth and photosynthesis of fruit trees will be seriously affected. Analysis of soil water potential can be effectively measured using the soil water potential meter to provide data support for relevant research.
The inhibition of photosynthesis by water stress is often not caused by stomatal factors, but is caused by the reduction of water potential, damage to chlorophyll, loss of root vigor and absorption function, accumulation of toxic substances, or feedback inhibition of photosynthate caused by adverse conditions. The result of the action. At present, the impact of different soil moisture content on the physiological indicators of fruit trees is relatively large. Because the soil moisture content indicators are not representative of the degree of soil drought, it is necessary to explore the changes of physiological indicators of fruit trees under different soil water potential conditions. . Studying the characteristics of physiological morphological changes of plants under different conditions of soil water potential is conducive to further clarify the relationship between plant life and soil moisture, and has direct practical significance for direct irrigation practice.
Instantaneous water use efficiency of plant leaves is the basic efficiency of the organic matter consumed by water consumption in the process of plant physiological activity, and it is one of the important indicators to determine the optimal water supply needed for plant growth and development. Leaf water use efficiency is the ratio of leaf photosynthetic rate to transpiration rate, and its influence mechanism is very complicated. Changes of Water Use Efficiency of Peach Leaves in Different Residential Areas . The water use efficiency of leaves is low around 6:00, which is mainly due to the low light intensity at this time. Water use efficiency rose to the highest around 7:30, and then it began to decline. According to the analysis, the water use efficiency of peach leaves was lowest in Area A, and highest in Area D.
The analysis of soil water potential meter shows that the change of physiological index of peach tree shows a certain regularity in different months and is affected by the soil water potential. The maximum photosynthetic rate of peach leaves in the 5th, 6th and 7th months basically appeared between 8:00-10:00. From the analysis of daily changes, the photosynthetic rate and transpiration rate showed a bimodal change within 1d, reached a low value around 13:00, and had a clear/noon break 0; the transpiration rate of peach leaves was basically before 12:00 Ascending trend, from the perspective of daily changes, the maximum value of transpiration rate appeared between 12:00-13:00, then began to decline, reached the trough around 14:00, and then began to rise again, reaching around 16:00 The second peak; the maximum value of water use efficiency of peach leaves basically appeared between 7:00-8:00. Comprehensive analysis shows that when the soil water potential is controlled between -60 and -40 kPa, all physiological indicators maintain a high level, which is conducive to the growth of peach trees.
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The machine has two spindles, the work time can be carved with different patterns, and with two different knife to carve what kind of pattern can always switch blade, greatly improves the work efficiency, saves time and labor
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XY working area |
1300*2500mm |
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Z working area |
200mm |
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Working accuracy |
±0.05mm |
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Repositioning accuracy |
±0.05mm |
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Max. working speed |
25m/min |
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Max. traveling speed |
50m/min |
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Spindle power |
4.5KW |
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Spindle speed |
0-24000r/min |
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Max. power consumption(without spindle) |
1,840W |
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Working voltage |
AC380V/50HZ |
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Control system |
DSP handset |
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Drive motor |
Stepper |
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Command language |
G-code,*u00,*mmg,*plt |
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Machine weight |
1.2t |
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Packaging Measure |
3.40m*1.93m*1.45m |
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