(2) ploughing for rain, ploughing and stubble clearing (deep ploughing for 25-30cm) in time after harvest to prevent drought and conserve moisture, and after ploughing, no harrowing, standing soil for air drying, soil fixation and rain interception are required.
(3) The selection of drought-resistant and high-yield varieties should not only consider the characteristics of drought resistance, barren tolerance, high yield, stable yield and high quality, but also consider that the development rhythm of varieties should be consistent with the temporal and spatial distribution of local precipitation.
(4) It is difficult to combine irrigation and topdressing in dryland fertilization, so fertilizer is mainly applied through base fertilizer and seed fertilizer, base fertilizer should be applied again, and the dosage of phosphate fertilizer should be increased appropriately.
(5) Sow early and at the right time. Usually the ground can be sown after thawing for 6-8 cm. If the soil moisture is poor, it is generally 5-6 cm deep. The sowing amount should be considered to depend mainly on the main stem to form the ear.
(6) In field management, intertillage weeding can be carried out for 2-3 times from emergence to jointing stage. In rainy years, 1 ~ 2kg pure nitrogen can be applied per mu before and after jointing. When flowering, spraying 0.2% ~ 0.3% potassium dihydrogen phosphate solution on the leaves for 2 ~ 3 times or once can prevent three diseases.