地面薄膜(简称地膜,下同)覆盖在国内外已被广泛应用于农业生产,果树的地膜栽培也已见有报导。普遍认为地膜覆盖具有改变近地面层的小气候条件,改良土壤环境,起到增温、保湿、保肥,维持土壤松软、不板结等良好作用,并能达到产品早熟、增产、优质的目的,业已引起有关部门的相当重视。 柑桔树体是一个有机整体,各器官间的协调生长是非常重要的。地下根系的良好生长是地上部分枝叶健全生长的基础。在柑桔的越冬时期,如能保 Ground film (referred to as plastic film, the same below) coverage at home and abroad have been widely used in agricultural production, fruit trees have also been reported cultivation of film. It is generally believed that the mulching has the microclimate conditions of changing the near ground layer, improving the soil environment, playing a good role of warming, moisturizing, keeping fertilizer, keeping the soil soft and not forming a knot, and can achieve the purpose of precocious production, high yield and good quality. Cause the relevant departments of considerable attention. Citrus tree is an organic whole, the coordinated growth of various organs is very important. The good growth of underground roots is the basis for the sound growth of branches and leaves above ground. In the winter of citrus, if you can protect