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It was carried out in the winter wheat field in Yinan Village, Wuquan Town, Yangling Baoying Irrigation Demonstration Field in Shaanxi Province. The former crop was summer corn. Yangling belongs to the continental warm temperate monsoon climate, with an average annual rainfall of more than 660 milliliters, more than half concentrated in July, August and September, and winter wheat growth accounts for only 30% to 40% of annual rainfall. The annual evaporation of 993.2 milliliters, more than 50% of precipitation. The soil type is loam soil. The measurement in the experiment was performed by a dry weighing method (drilling method). Soil moisture measurement depth 100cm, 10cm per layer, is divided into 10 layers. In order to ensure the reliability of the data, two replicates were taken, and the average value of soil moisture was taken twice for each layer. A quick and effective measurement can be performed using a soil moisture temperature measurement instrument.
The determination of soil water temperature combined with straw mulching and tillage mode by soil moisture temperature quick tester has improved the soil's own water content and soil conservation ability compared with traditional farming. In winter wheat-summer corn continuous cropping areas, coverage and tillage measures can be combined to further improve the ability of soil conservation. Among them, deep-trimmed cover and no-tillage stubble-retention can significantly protect the soil; at the same time, it can alleviate the problem that straw can not deal with pollution. In this experiment, no-tillage stubble has a prominent effect on soil conservation. In areas where animal husbandry needs straw as feed, this type of cover farming mode is recommended, ie, it can preserve the moisture in the soil and reduce the yield of the former crop. The loss of moisture in the pre-planting period of subsequent crops can also reduce labor input.
Analysis of Soil Moisture Protection by Straw-covered Soil with Soil Moisture Temperature
Winter wheat is an important food crop in northwest China, and soil moisture has a decisive effect on the growth and yield of winter wheat. However, the uneven distribution of rainfall time and space can only be achieved by increasing the conservation capacity of the cultivated land itself, so as to increase the utilization efficiency of crop water. In order to maintain the soil moisture as the starting point, the experiment explored a method and approach to improve soil water conservation capacity and reduce water and soil loss by combining the straw cover method with the farming system. Soil moisture temperature measurement data can be measured using a soil moisture temperature meter.