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杨树窄带型农田防护林是一种疏透结构的农田防护林带,它占地少,防护效益又好,特别适合我省风沙较大的西、北部地区。 林带主带方向应与害风方向垂直。要采用杨树与灌木混交。杨树2—4行,灌木在杨树带两侧各1—2行,,副带方向与主带垂直,可杨树与灌木混交,也可直设杨树带。杨树应选择窄冠、耐干旱瘠薄、速生、抗病虫害的品种,如小黑杨、群众杨、小钻杨类等。灌木树种可选择紫穗槐等。
Poplar narrow-band farmland shelterbelts is a kind of farmland shelterbelts with dredging structure. It occupies less land and has good protection and good protection effect. It is especially suitable for the west and northern areas with large sandstorm in our province. Belt main belt direction should be perpendicular to the direction of the typhoon. To use poplar and shrubs to mix. Poplar 2-4 rows, shrubs on both sides of the poplar with 1-2 lines, sub-belt direction and the main belt vertical, poplar and shrubs can be mixed, but also direct set poplar. Poplar should choose narrow crowns, drought-resistant infertility, fast-growing, pest-resistant varieties, such as Populus nigra, Populus Yang, small drilling Yang class. Shrub species can choose Amorpha fruticosa and so on.