To investigate the rationality of winter irrigation for different crops in the Ningxia Yellow River Diversion Irrigation Area and further optimize the irrigation system,this study takes the Pingluo County Improved Seed Breeding Plant in Huinong Canal Irrigation Region of Ningxia as the experimental site,establishing winter irrigation monitoring zones,non-winter irrigation monitoring zones,and pre-sowing irrigation monitoring zones.Through a comprehensive monitoring of soil properties before crop planting,post-planting growth conditions,and post-harvest yields,the physicochemical properties of soil and the growth characteristics of crops under different irrigation patterns are analyzed.The results show that:①Winter irrigation plays an important role in replenishing water,preserving soil moisture,leaching salt,reducing salt accumulation,and maintaining soil temperature in the farmland of the Yellow River irrigation area in Ningxia.The moisture content at the depths of 0-30 cm in the winter irrigation area before spring sowing is 29.2%higher than that in the non-winter irrigation zones,but the soil moisture preservation and desalination effects are short-term.②Winter irrigation plays a crucial role in ensuring the emergence,growth,and yield of early-maturing wheat in the Ningxia Yellow River Irrigation Area,but its effect on the growth and yield of late maturing corn is not significant.For non-winter irrigated wheat,the initial emergence rate is only 30.2%.The pre-sowing irrigation reduces yield by 52.3%compared to winter irrigation.③Winter irrigation is necessary for wheat farmland in the Ningxia Yellow River Diversion Irrigation Area,and both winter and spring irrigation can be used for corn farmland.The results of this study can provide important references for the optimization of irrigation systems,water-salt regulation,and agricultural water-saving development in Ningxia Yellow River Diversion Irrigation Area.
Yellow River irrigation areawinter irrigationmaizewheatpre-sowing irrigation
NETL
NSTL
维普
万方数据
