土右旗黄灌区位于内蒙古自治区包头市东南部，在８０年代以前，该地区只是在房前屋后零星栽植梨树，面积不足０－５ｈｍ２。８０年代以后，许多果农在盐碱沙荒地上种植梨对，由于土壤盐碱重、瘠薄及品种不对路，栽植的梨树成活率极低，种树不见树，影响了果农种树积极性。从１? Tuyouqi Yellow Irrigation District is located in the southeastern part of Baotou City, Inner Mongolia Autonomous Region. Before the 1980s, the area was sporadically planted with pear trees in an area of ​​less than 0-5hm2. Since the 1980s, many fruit growers planted pear Yes, due to soil salinity, infertility and breed is not right, the survival rate of pear cultivation is extremely low, trees do not see the tree, affecting the enthusiasm of farmers planting trees. From 1?