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黄河三角洲平原是我国重要的农业生产基地。近年来，国家非常重视黄河三角洲的开发利用，为了提高农业生产力，改善农业生产环境和生态环境，黄河三角洲地区已将可持续农业作为农业的发展方向，农业种植模式逐渐由二元结构向三元结构转变，并以种植苜蓿作为农业与牧业结合的纽?
The Yellow River Delta Plain is an important agricultural production base in China. In recent years, the state attaches great importance to the development and utilization of the Yellow River Delta. In order to improve agricultural productivity and improve agricultural production environment and ecological environment, the Yellow River Delta has taken sustainable agriculture as the development direction of agriculture. The agricultural planting mode gradually changes from dual structure to ternary Structural change, and the planting of alfalfa as a combination of agriculture and animal husbandry New Zealand?