The temperature in the rapeseed production area is rising, we must seize the opportunity to manage
It is a good idea to use one point of cultivation to cultivate a piece of rape. It is a good idea to use it in the management of rapeseed that is in the flowering stage. Only by coordinating the management of rapeseed in the flowering stage according to the weather changes can the rapeseed grain be full and high yield. At the flowering stage, the daily average temperature of rapeseed needs to reach 12 ° C to 20 ° C, and 14 ° C to 18 ° C is most suitable. However, starting from the 22nd of this month, many rapeseed producing areas in the south are experiencing low temperature and rainy weather. In the rapeseed producing area under the influence of low temperature and rain, appropriate organic fertilizer should be applied to improve the resilience and resistance of rapeseed. Cold force. Today, in addition to rain and snow in places like Yunnan, Sichuan and eastern Tibet, the canola production areas such as Jiangnan South China and Guizhou will turn fine, and the temperature will rise from 4 °C to 10 °C. Meteorological conditions are suitable for field management of rapeseed. Tomorrow, the rainwater range in the southern rapeseed production area will not change much, and it will continue to be sunny, and the temperature will continue to rise under the help of Yangguan. It is expected that the warming will continue until the end of this month. Under such weather conditions, farmers' friends should hurry and manage the field of rapeseed. However, it should be noted that there will be a cold air affecting the central and eastern parts of China from the beginning of the 31st of this month, especially from April 1st to 3rd. There will be rainfall in the Jiangnan South China rapeseed production area, and preventive measures should be prepared in advance.
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a) Sensor stays away from mechanical vibration source, for example, pump. Use flexible pipe to connect meter with pipeline if inevitable. The housing of meter must be standalone, out of touch with any other device. There must be 3 times the size of sensor between 2 sensors if there are many flow meters on the same pipeline, to avoid resonance.
b) Do not install sensor on pipeline that easily expands with hot and contracts with cold, especially near expansion joint, which leads to a worse stability.
c) Sensor stays away from industrial electromagnetic field, such as large generator and transformer, better 5m at least. Such device influences the performance of drive coil and pickoffs. Make sure magnetic field intensity less than 400A/m.
d) Sensor shall be installed on lower pipeline, to be easily full of fluid.
e) Make sure Ex-mark meet application requirements if in hazardous area.
f) Build a sunshade if the meter is under direct solar radiation. g) Keep the meter from corrosive liquid.