Temperature and humidity recorder to observe the effect of flood control net on temperature and humidity in vineyard

In various natural disasters, hail is an important natural disaster that affects the growth of crops. Every year, the direct economic losses caused by hail disasters in China are as high as more than 30 billion yuan, and the area is about 2.43 million hm2, which has caused great agricultural production. Hazards and losses. And agriculture is an important economic industry in China and occupies a very important position in our national economy. Therefore, in many areas, the damage caused by hail is reduced by erecting flood prevention nets. But will the establishment of flood prevention nets adversely affect the temperature and humidity changes in the vineyard? In order to clarify whether the grape flood prevention net will affect the temperature and humidity in the vineyard, the temperature and humidity in the vineyard where the flood control net and the unprotected flood control net were set up were observed using a temperature and humidity recorder.
Temperature and humidity are important factors affecting the growth of grapes. They have important influence on the quality and yield of grapes. Therefore, while building a flood prevention net, it is necessary to comprehensively consider its influence on the temperature and humidity of the vineyard. The observation of temperature and humidity changes in the vineyards of flood control nets of different growing seasons and with different mesh sizes using temperature and humidity recorders shows that the establishment of flood control nets can affect the variation of environmental temperature and humidity in vineyards, When the shoots begin to grow, their changing trend is not obvious. However, as the number of new shoots increases, the degree of canopy closure in the garden increases, and the flood prevention net can play the role of cooling and moisturizing. This shows that the rapid growth of new shoots, due to the low canopy density in the park, the exchange of air inside or outside the orchard is in good condition, so the establishment of flood control nets has little effect on the environmental temperature in the vineyard. In the middle and late stages of grape growth, as the seasons change, the temperature keeps rising, the temperature changes between 13 and 32°C, and the humidity changes between 39% and 90%. At this time, new shoots increase continuously, and the inner leaves increase. The curtain coefficient also reached the highest value for the whole year, and the transparency of the vineyard was significantly reduced.
The observation results of the temperature and humidity recorder also show that the mesh size of the flood prevention net is different, and the effect of cooling and moisturizing is also different, and the smaller the mesh is, the better the effect is. For example, if the mesh size is 1.0cm×1.0cm, the flood prevention net can be cooled by more than 4°C, and the humidity in the garden is increased by more than 6%. Cooling and moisturizing can promote photosynthesis and reduce transpiration, which is beneficial to the growth of grapes in the Huaiqiu Basin, which is relatively dry during the same period of the year, rain and heat, and high temperatures in the summer and autumn.

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