1998年4月7日，乐陵市喷灌工程技术试验成果通过德州市科委组织的省内专家鉴定级鉴定。专家们通过现场参观、听取汇报、审定资料及有关图表，进行了认真细致的研究讨论，一致认为：该研究是根据本市水资源贫乏、她下水资源分布复杂、黄河水可用不可靠、地下水位大幅度下降的情 April 7, 1998, Leling City, sprinkler irrigation engineering test results through the Dezhou Municipal Science and Technology Commission appraised the level of experts in the province. The experts conducted careful and meticulous research and discussion through on-site visits, listening reports, examination and approval documents, and relevant graphs. They all agreed that this study was based on the city’s poor water resources, the complicated distribution of water resources, the unreliable use of the Yellow River water, the underground water table Dramatic decline in the situation