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At present, 12 national-level public opinion monitoring sites have been established in 4 counties in the region, and 22 autonomous county-level public opinion monitoring sites have been set up in 6 counties. The monitoring of soil drought monitoring systems has guided the region's agricultural production. According to the comprehensive factors such as agricultural division, meteorological conditions, topography, cropping system, and agricultural production level, the monitoring of farmland moisture in Ningxia is divided into three areas: the Yellow River irrigation area, the central arid area, and the southern mountain area. The drying method and the soil moisture velocity meter method are used in combination to monitor. However, due to the influencing factors of the instrument monitoring and the instruments and equipment are prone to failure, the drying method is mainly used to determine the soil moisture content. In each monitoring plot, 0~10, 10~20, 20~40, 40~60, 60~100cm were measured respectively, and finally averaged.
In 2011, the general public opinion of the Yellow River Irrigation District was basically suitable. In some parts of the southern mountainous areas, droughts occurred at certain periods, and the central arid area was generally dry. The best sensation occurs in late August, with an average soil moisture content of 19%. This is due to continuous rainfall. The lowest sensation appeared in the central and southern regions from July 10 to August 10. The average soil moisture content was 10.7% due to persistent high temperatures. In the southern mountainous region and the central arid region, in the spring and summer of spring and summer, the two extreme climate effects were encountered in 2011, and the spring sowing time was delayed by about 7 days compared with the normal year, which had a certain impact on the growth of wheat. In June and July, the precipitation in the whole area was less, and the high temperature continued, the evaporation of soil moisture accelerated, and the moisture content decreased. The middle drought occurred in most areas in the central arid region. Since late August, precipitation has gradually increased, which has effectively relieved the drought conditions in the early stage and is conducive to the growth of late autumn crops. There was more rainfall in September and October, which was more favorable for the ploughing of land, autumn mulching, and winter wheat sowing. Through the monitoring of soil moisture and drought monitoring, we will guide and organize farmers to timely adjust the planting structure, rationally arrange agricultural production, take active measures to alleviate and mitigate drought threats, and steadily increase the level of agricultural production.
Although the monitoring of soil moisture using soil drought monitoring system in Ningxia was approved, it also has certain limitations, which are mainly manifested in the areas covered by the project are not extensive enough. Therefore, in the future work, it is necessary to continuously expand the coverage of projects and monitoring points, accumulate a large amount of data according to different soil texture, topography, and meteorological factors, enrich evaluation indicators, further promote the development of local agriculture, and promote the construction of rural economy. .
Effect of Soil Drought Monitoring System on Monitoring of Public Opinion in Ningxia
Ningxia has a dry climate and scarce precipitation. There are certain limitations on the development of agriculture, which hinders the further development of rural economy in the region. In order to promote the sustainable development of agriculture in the region, agricultural departments at all levels attached great importance to the drought-relief and agricultural water conservation in the region and the potential for the development of limited water resources. The water resources were optimized and allocated, and certain achievements were made in promoting agricultural development. . In the context of droughts in successive years and the reduction of water supply in the Yellow River, it has made outstanding contributions to drought relief, agricultural efficiency enhancement and farmers' income increase. However, with the reduction of water resources, the use of soil drought monitoring systems to strengthen monitoring of soil moisture in farmland, rational development and utilization of effective water resources, adjustment of the layout of the agricultural industry, and better construction of modern agriculture have become urgent requirements.