Cucumber hi light, with the change of light temperature, its production also has a significant change, when a certain period of light and heat conditions will cause discomfort. Therefore, light and heat conditions have a very important role in the production of cucumber. In particular, effective accumulation of light is even more important. The effective pluvial measurement instrument can measure light during the cucumber planting process, and analyzes the agricultural meteorological viewpoints. There are many reasons for the normal growth of cucumbers and the loss of production due to friends, including photothermal conditions. It has a great influence on the yield. It is currently analyzed that the light and heat index provides a scientific management basis for the production of greenhouses.
Based on the greenhouse shed production and temperature data accurately recorded by the cumulonometer and using the solar radiation observation record of the meteorological observatory, the relationship between the successive yield changes of cucumber and the photoperiodic conditions during the corresponding period can be seen. It can be seen that in the period of the melon period ((5-} - June) Cumulative lighting (average daily accumulated light) and cumulative temperature (average daily accumulated temperature) in the interval between two harvests (2 -} 3 days) are positively related to the current production and sometimes affect The next day's output, the average daily accumulated light and the average daily accumulated temperature for the first 5 days before harvesting, also had a positive correlation with the current production.
Under a certain level of fertilizer and water conditions, an effective cumulonometer was used to determine that the accumulated temperature and accumulated light was above a certain value, the yield was normal, reached a certain level, and the production peak appeared; below a certain limit, the yield immediately decreased. Accumulation of accumulated temperature is too high and is not conducive to yield formation. It has been observed that the development of cucumber melons, from the opening of female flowers to the grown-up commodity size during the melon period, generally takes 7 to 10 days, and the early development is slow and the late development is fast. In the 3 to 5 days before harvesting, the melon strips are rapidly enlarged, and the growth can account for more than 50 of the whole melon weight. Therefore, in addition to suitable fertilizer and water conditions before the harvest, the accumulated temperature and accumulated light will directly affect the formation and transport of photosynthetic products. Insufficient light and temperature conditions will significantly affect the yield of cucumber.
Based on the greenhouse shed production and temperature data accurately recorded by the cumulonometer and using the solar radiation observation record of the meteorological observatory, the relationship between the successive yield changes of cucumber and the photoperiodic conditions during the corresponding period can be seen. It can be seen that in the period of the melon period ((5-} - June) Cumulative lighting (average daily accumulated light) and cumulative temperature (average daily accumulated temperature) in the interval between two harvests (2 -} 3 days) are positively related to the current production and sometimes affect The next day's output, the average daily accumulated light and the average daily accumulated temperature for the first 5 days before harvesting, also had a positive correlation with the current production.
Under a certain level of fertilizer and water conditions, an effective cumulonometer was used to determine that the accumulated temperature and accumulated light was above a certain value, the yield was normal, reached a certain level, and the production peak appeared; below a certain limit, the yield immediately decreased. Accumulation of accumulated temperature is too high and is not conducive to yield formation. It has been observed that the development of cucumber melons, from the opening of female flowers to the grown-up commodity size during the melon period, generally takes 7 to 10 days, and the early development is slow and the late development is fast. In the 3 to 5 days before harvesting, the melon strips are rapidly enlarged, and the growth can account for more than 50 of the whole melon weight. Therefore, in addition to suitable fertilizer and water conditions before the harvest, the accumulated temperature and accumulated light will directly affect the formation and transport of photosynthetic products. Insufficient light and temperature conditions will significantly affect the yield of cucumber.
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