沙荒盐碱地梨半成苗小拱棚罩盖定植试验大面积栽植梨树，多采用成苗定植法。在水利条件不足，以及表层水分渗透极快的沙荒地或盐碱较重的地区，定植梨树成苗往往成活率极低且生长缓慢。半成苗定植，由于根系相对完整以及地上部仅保留１个生长点，使得幼树成活率高，缓苗快... Shaliu saline-alkali pear half ancestral small arch shed colonization test large area planted pear, and more use of seedling planting method. In poor water conditions, as well as the rapid infiltration of superficial moisture or desertification of saline-alkali areas, planting pear seedlings often very low survival rate and slow growth. Semi-planting seedlings, due to the relative integrity of the root system and the ground to retain only one growing point, making saplings high survival rate, Huanmiao fast ...