一、前挡后截法:在祇有一面受风害,其它方面稍有遮蔽,风害不大的沙丘,可使用这个方法封植。封植的方法是根据风向和沙丘的形状来决定的,在向风面(北面)空地上,东西栽成带状形式,先栽三行灌木(杜梨、红荆、紫穗槐),用三角形方式交错着栽,株距一只,行距三尺,每坑放苗三、四株,坑深二尺,栽三行成一带,每距五尺再栽三行乔木(小叶杨、柳等), First, the front block after the truncation: only one side by the wind damage, slightly covered in other areas, the wind is not a small sand dune, you can use this method of sealing. Planting method is based on the wind direction and the shape of the dunes to decide, in the wind (North) open space, things planted in the form of ribbons, the first planted three rows of shrubs (Du pear, red Jing, Amorpha fruticosa) with Triangular interlaced planting, spacing of a plant spacing of three feet, each pit Fangmiao three, four, pit deep two feet, planted into three lines into a strip, and then planted three rows of trees at a distance of five feet (poplar, willow, etc.) ,