The grain filling stage after corn silking, that is, two years from August 17 to September 10, was observed for 50 days, and the first ear position was highest at 8:00, 14:00, and 20:00 in each day. Perform fixed observations of the microclimate in the field. Four processes are performed at the same time. The temperature, humidity, and wind speed were measured using a hand-held meteorological station NK4000; the amount of effective light was measured using a photo quantum meter (3415F).
During the same year, as the row spacing increased, the daily average temperature in the group gradually decreased. The humidity in the groups with different row spacings also differs, the row spacing increases, and the relative humidity within the group decreases. The changes in humidity and temperature are relatively consistent. The reason may be that the 50 cm line spacing is narrow and the ventilation is poor, resulting in reduced ground transpiration and high temperature and humidity. The wind speed increases as the row spacing increases. The wind regulates the moisture and heat in the corn population and affects the temperature and humidity. The change of daily light intensity for each treatment was T80>T70>T60>T50. It can be seen that the light energy per unit area of ​​50 centimeters is high and the yield is the highest, which means that the light utilization rate per unit area is decreasing with the increase of line spacing.
Through the measurement and research of hand-held meteorological station, it was found that changes in plant spacing arrangement had a significant effect on maize yield and microclimate in the field. Row spacing had a significant effect on corn yield. Row spacing was 50 cm and the yield was the highest. The output in 2011 and 2012 were 10,551 respectively. 75kg/hm2, 9453.3kg/hm2. The yield of each treatment was: T50>T60>T70>T80. The results of the two-year test were consistent. Corn originates in the tropics and is a high-temperature, high-efficiency crop. It has certain requirements for humidity, temperature, light, and wind speed. The 50 cm culture method has a small row spacing, and the large daily average temperature, relative humidity and small wind speed are The transpiration is reduced, the small transpiration maintains a certain humidity, avoids water deficits during corn milking and grain filling, and the population density at the 50 cm line spacing reduces the loss of light leakage. The solar radiation absorbed by leaves per unit area Large, further increase the utilization of light energy. Comprehensive comparison shows that the 50 cm row spacing of the planting structure is relatively stable and can fully utilize light for photosynthesis and organic matter production. Therefore, the field microclimate at 50 cm spacing is conducive to the growth and development of Longping 206, and the high-yield potential is better played.
Kn95 mask edge sealing machine with the ultrasonic, the working speed can be adjusted as per worker, the ultrasonic mask edge machine is for sealing the fold mask edge, new design prevent the finger under the working mold for safe operation.This machine is designed for sealing the side of KN95/N95 mask, with intelligent controller and ultrasonic drive, support to adjust the pressing speed as the worker's need.
Safe operation after feeding the materials. 1 worker to operate.
Lower power consumption,high quality edge sealing effect
Mask machine, masking making machine, Mask Edge Sealing,Fold Mask Edge Beading,Ultrasonic Edge Sealing,N95 Mask Edge Sealing
Shenzhen Chaocheng Sewing Technology Co., Ltd , https://www.cn-chache.com