在老龄果园套种优良牧草鸭等（Dactylisglomerata）和鹰嘴紫云英（Astragaluscicer）。经3年试验，研究结果表明，果园套种鸭茅和鹰嘴紫云荚，具有蓄水保墒，提高土壤肥力，促进果树生长发育，增加果实产量，改善果实品质等明显效应。尤其鸭茅具有耐前性强，覆盖度大，生物学量高，再生性强等优点，且易于栽培，可在老龄果园中大面积推广。 Intercropping finely aged forage ducks, such as Dactylis glomerata and Astragaluscicer, in aged orchards. After three years of experiments, the results showed that the orchard intercropping sow and Ophiopogon japonicus have the obvious effect of storing water and preserving soil moisture, improving soil fertility, promoting growth and development of fruit trees, increasing fruit yield and improving fruit quality. Especially Dadong Mao has the advantages of strong precocity, large coverage, high biological content, strong regenerability, and is easy to cultivate, and can be widely popularized in the aged orchards.