Effects of Water Stress on Yield and Quality of Cereal Crops Water stress is one of the most important factors affecting crop growth and yield. The total annual output reduction due to water deficit caused by water deficit in the world exceeds the sum of the reduction caused by other factors. The effects of different stages of crops are different. The difference in soil moisture content is caused by the obstruction of the production of various components in the process of plant growth, such as hormones. Therefore, a multi-parameter soil measuring instrument is used during the growth of plants. Measurements, the detection of objects in the process of detection is not only limited to the monitoring of moisture, but also great help for soil temperature monitoring.
In arid and semi-arid regions. Drought stress is one of the important abiotic factors that affect crop growth and limit crop yields. In the case of moisture loss, the growth of crop roots and aboveground parts is greatly inhibited, and the biomass, yield, and harvest index of grain can be reduced. Therefore, in order to ensure the grain yield, a fixed point moisture monitoring system is used to perform soil moisture Monitoring becomes even more important. Especially in the early stage of grain growth and development, the harm of water shortage will be even greater. If water stress is encountered, the potential of the grain bank will be shortened by reducing the number of endosperm cells and apoplast formation, resulting in the accumulation of endosperm. The ability of the starch to decrease, the rate and duration of shortening, eventually led to a decrease in kernel weight.
Grouting is an important period for the growth of cereal crops. The duration and filling rate determine the final grain weight, which is one of the important constituent factors of yield. During this period, the wireless moisture and drought management system was not used to monitor and control the soil moisture. As a result, the lack of soil moisture will cause the decrease of photosynthetic rate, the shortening of grain filling time, the decrease of grain filling rate, and the premature aging of plants. Grain production declines. At the same time, insufficient soil moisture content during these periods will directly affect the transpiration of grain growth, directly affecting the transport process of organic matter, and leading to a decline in the quality of grain.

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