过去,许多果农在果园管理上总是认为地面光光的,没有一根杂草最好。但是,最近国内外科学家研究发现并非如此。在果园,除了果树以外保留一定数量的其它植物(包括人工种植的某些作物、牧草、草坪草以及自然杂草)是有益的。这些保留在果园中的非靶标植物称之为覆盖植物。这些覆盖植物利用得当,可以减少风和水对土壤的侵蚀,增加或保持土壤的氮,促进其它营养的 In the past, many fruit growers always considered the light of the ground in orchard management, and it was best not to have one weed. However, recent domestic and foreign scientists found that not the case. In the orchard, it is beneficial to keep a certain amount of other plants (including some of the crop, grass, turf grass, and weeds naturally) in addition to fruit trees. These non-target plants that remain in the orchard are termed cover plants. Proper use of these covered plants can reduce wind and water erosion of the soil, increase or maintain soil nitrogen, and promote other nutrients