At present, winter wheat is entering the critical period of spring field management from south to north. Doing a good job of moisture monitoring and guiding farmers to scientifically irrigate seedlings due to moisture is very important to promote a bumper summer grain harvest and strive to achieve a good harvest throughout the year. At present, the soil moisture in the winter wheat area in the country is generally suitable, the local surface moisture is insufficient, and the seedlings are generally better than the same period last year. According to meteorological forecasts, there will be less precipitation in North China and Northwest China during spring plowing and spring pipes, and spring droughts may occur. Starting with field management in spring, all localities should do everything possible to do a good job of measuring moisture and irrigation guidance to ensure another bumper harvest of summer grains. basic situation This area includes winter wheat areas in Shanxi, Shaanxi, Gansu, and southern Ningxia. The relative moisture content of most of the soil in this area is 65%-73%, and the moisture content is suitable. The relative water content of the local soil in southern Shanxi, Weibei of Shaanxi and Longzhong of Gansu is less than 65%, and the surface moisture is insufficient. In some areas, the relative soil moisture content is less than 65%, and mild drought occurs. The current situation of Miao is better than the same period last year. Irrigation recommendations Water resources are scarce in this region, and there are nine droughts in ten years. The irrigated land is dominated by "sections". Among them, thick and vigorous seedlings and first-type seedling wheat fields are sprayed with chemical control regulators during the rising period to control the vigorous growth of wheat seedlings. Irrigation is carried out when the relative soil water content of the jointing period is below 65%. The second-class seedling wheat field is irrigated when the relative soil moisture content is less than 60% during the regreening period, combined with irrigated acres of urea topdressing 3-4kg. The three types of seedlings are irrigated once each when the relative soil moisture content is lower than 55% in the early stage of rising and jointing stage, combined with irrigation, topdressing 5-6kg of urea. Some wheat fields with thick dry soil layer and severe drought in spring should be irrigated as soon as possible. Wheat fields with a relative soil moisture content of less than 65% during the booting stage should be irrigated in time. Dry land is dominated by "accumulation", and should be suppressed and hoeed as soon as possible after spring, to maintain moisture and increase temperature, and to take advantage of the moisture and topdressing to promote the weak and strong. For late sowing fields with weak seedlings and wheat fields with insufficient base fertilizer, apply 4-6kg urea per mu; for wheat fields without base fertilizer, apply 8-10kg urea per mu with appropriate amount of diammonium phosphate. Irrigation saving measures This area is mainly canal irrigation area and well irrigation area. The following water-saving irrigation measures can be adopted: One is short (narrow) border irrigation, with an irrigation volume of 50-60m3/mu each time. The second is hose water delivery (Xiaobailong) border irrigation, and the irrigation volume is 30-40m3/mu each time. The third is sprinkler irrigation, using mobile, fixed, and buried sprinkler irrigation equipment, with a total irrigation volume of 20-30m3/mu per water, which can be integrated with water and fertilizer, topdressing according to the principle of small amounts and multiple times, and 5-6kg of urea per acre. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone Industrial Microscope Industrial Microscope,Inspection Binocular Microscope,Industrial Binocular Microscopes,Long Working Distance Microscopes NINGBO VANCO INSTRUMENT CO.,LTD , https://www.vancoscope.com