In recent years, the frequency of droughts has been high, which has caused serious impacts on agricultural production and life. Through comprehensive analysis and collation, drought conditions in agricultural drought areas have been evaluated, providing reliable service basis for crop irrigation and drought relief work. So what is agricultural drought? This mainly means that when the level of agricultural technology is not high, the water demand of plants and the amount of water taken from the soil will not be in balance for a long period of time. As a result, crop growth will be affected by water shortage. Damage, an agricultural meteorological disaster affecting production. The monitoring of soil drought conditions utilizes wireless public opinion and drought management systems to provide appropriate measures.
Agricultural Drought and Drought Assessment is used to determine crop drought conditions and lack of arable land (water) during sowing. There are several ways to evaluate it. Here we use the soil moisture method and the continuous rainless days method f21. In assessing drought conditions in irrigated agricultural areas and irrigated agricultural areas in irrigated agricultural areas and in irrigated agricultural areas, priority should be given to the soil moisture method, and areas with no wireless moisture and drought management systems can choose the continuous rainless days method. Soil moisture refers to the degree of dryness and humidity of the soil, ie, the actual moisture content of the soil. The available soil moisture content is expressed as a percentage of the dry soil weight. The soil moisture content can also be equivalent to the percentage of the field water holding capacity, or relative to the saturated water volume. The relative water content, such as percentage, is expressed. Calculation formula:
W=Qx100%/F
In the formula, W - Soil Relative Humidity (%) Knife - soil average water content; F - Soil average field capacity. The selection of soil moisture monitoring points should be representative. When evaluating soil moisture content, the average value of monitoring sites in the evaluation area should be taken.
Through the monitoring of wireless public opinion and drought management systems, dynamic monitoring and analysis of soil moisture conditions is conducted. Timely irrigation is an effective measure to radically eliminate drought conditions. It is generally not easy to irrigate at noon. Wet irrigation techniques should be adopted for a small number of times without flooding. For wheat fields that have suffered less damage, cover the soil between wheat rows with straw, rice straw, leaves, etc. to reduce evaporation loss of soil moisture. Watering should be due to seedling system, late spring wheat to promote the main spring in the early spring should not be watering, so as not to reduce the temperature and affect the growth; strong seedlings in the spring and summer wheat to promote control combined.
Aluminium Truck Body
Aluminium Truck Body,Aluminum Panel Sheet,Polished Aluminum Sheet,Aluminium Alloy Sheet
KAM KIU ALUMINIUM GROUP , https://www.kamkiualuminium.com