【摘要】 在库布其沙漠进行了3年的梭梭(Haloxylonammodendron)造林试验研究,通过调查测定,在半干旱的库布其沙漠无沙障防护时成活率为50%,有沙障防护的成活率则达到65%～70%之间。保存率也随着栽植梭梭后植被覆盖率的增加,从第1年的26%提高到第3年的60%。从各项生长指标来看,表现基本稳定,生长较快。当年造林后,植株均高为49.34cm,平均地径0.78cm。第2年梭梭植株均高达109.20cm,平均地径为1.87cm。第3年均高可达131.60cm.,平均地径3.34cm。几种立地类型相比较,2年生梭梭各项生长指标丘间地优于半沙坡和沙丘外部砂粒质沙地。1年生梭梭在设立沙障的条件下沙丘迎风坡与背风坡相比较,生长状况没有特别明显的差异。更多还原

【Abstract】 The study of cultivation of Haloxylon ammodendron was done in Kubuqi Desert for three years. By means of investigation and survey, the survival rate of Haloxylon ammodendron is 50% without barrier against sand and its survival rate can be 65%～70% when the screen against sand was put up. In the mean time, the conservation rate increased from 26% in the first year to 60% in the third year after planting Haloxylon ammodendron. From various growing indices, the growth of Haloxylon ammodendron was stable and rapidly. In the first year of cultivation, its average height was 49.34cm and its average ground diameter was 0.78cm. In the second year, its average height was 109.20cm and its average ground diameter was 1.87cm. In the third year, its average height was 131.60cm and its average ground diameter was 3.34cm. In the beginning of fixing flowing dune, in the second year the various growth indices of Haloxylon ammodendronis were better in the areas between sand dunes than in the middle of sand slope and dune outside sand dunes. There was no distinct difference in the growth status of the first year Haloxylon ammodendron comparing with the slope of heading wind and the slope of dead wind when the screen against sand was put up.更多还原