The key to high temperature management of cucumber in greenhouse is the key
Increase the temperature of the shed to promote the slow growth
1-3 days after planting to promote rapid rooting slow seedlings, to increase the temperature of the greenhouse after planting. Greenhouse cucumber should be closed after the planting of the greenhouse does not release air or less air, in order to increase the temperature and temperature, to speed up the seedlings, the daytime temperature control at 25 ~ 32 °C, nighttime control above 16 °C, the ground temperature control at 15 °C above, the temperature exceeds 35 °C Put the top wind.
Reduce temperature to cultivate strong trees
After easing the seedlings, the air outlets will be expanded and the seedlings will be planted. The daytime temperature can be controlled at 22-28°C, and the temperature in the first half of the night is kept above 15°C, and it is reduced to 11-13°C in the latter half of the night. Control seedlings can promote the development of root system, robust stems and leaves, can enhance the plant's resistance to disease and stress resistance, and if you take the temperature and promote tree growth, it will easily lead to premature plant failure, is not conducive to high yield and high efficiency of cucumber, temperature control time is about 20 days, thereafter The cucumber enters the flowering stage.
Raise the shed and warm the trees
The daytime temperature during the melon period exceeded 32°C and began to release air, so that the greenhouse was maintained at about 30°C for a longer period of time. The night temperature should be maintained above 13 °C to promote the development of melon strips. Reduce the temperature to prevent diseases After the Spring Festival, as the outside temperature gradually rises, the amount of air leakage should gradually increase according to the changes in the air temperature inside the shed. During sunny days, it should be maintained at 27 to 30°C and 12 to 14°C at night.
Different temperatures increase production
Cucumber melon period according to the physiological activities of cucumber, at different times of the day also have to carry out different temperature management, which is also an important measure to improve the disease resistance and yield of cucumber. In the morning, cucumber is the strongest stage of photosynthesis in the day. The temperature is controlled at 26 to 30°C, and it is controlled at 20 to 24°C in the afternoon. In the middle of the night to promote nutrient transport, the temperature is controlled at 15 to 18°C, and the respiratory activity is controlled at the latter part of the night. Control at 11-14 °C.
IT02S, is JRT new product in the early 2019, which is a single-point LiDAR sensor, also called tof distance sensor. With a micro size of 46x17x7mm, customers can widely use in many Laser Measurement Solutions. The lidar distance sensor can measure 12m short-range with high frequency up to 100hz. It's great for Unmanned Aerial Systems. If you need us send you data sheet and spec for this products, offering sample as well, pls tell us, thank you.
Accuracy
+/-8cm@ 0.1~3.5m
Measuring Unit
cm
Measuring Range (without Reflection)
0.1-12m
Measuring Time
0.1~3 seconds
Measuring Frequency
100 Hz
Laser Class
Class II
Laser Type
650nm, <1mw, red
Weight
About 5g
Voltage
DC2.5V~+3.5V
Serial Level
TTL 3.3V
Size
46*17*7mm
Operating Temperature
0-40 ℃ (32-104 ℉ )
Storage Temperature
-25~60 ℃ (-13~140 ℉)
IT02S Mini Tof Sensor Module Diagram
Parameters of IT02S:
IT02S – the High performance-price ratio measurement solution
* low power consumption of single transmit and single receive
* small size: 46*17*7mm
* low cost
* proffessional techinical support
2D Laser Distance Sensor,2D Lidar Sensors,Tof Lidar Distance Sensor, Flight Distance Sensor
Chengdu JRT Meter Technology Co., Ltd , https://www.accuracysensor.com