沙漠油田基地路生物防沙试验段林木生长状况

对沙漠油田基地路生物防沙技术示范工程中不同立地条件下所种植的梭梭、柽柳、沙拐枣三类灌木的生长状况进行了调查，对盐水灌溉后各种立地类型的沙地土壤水盐状况进行了取样分析。研究结果表明：在塔中沙漠油田基地路生物防护体系建设的过程中，在沙丘和平沙地上应选用沙拐枣和梭梭，如种植柽柳则需采取适当的土壤保水措施（如在种植坑内加施草碳、固水剂、粘土等）。在含有下伏亚粘土层的沙地上应选用柽柳和梭梭，在丘间板结沙地上要想营造防护林，必需采取适当的技术措施，使土壤疏松（如深开沟、回填流沙等）。

Analysis on the Growth Status of the Shrubs along the Biological Sand-control Experimental Section of the Oil Base Road in the Hinterland of Taklamakan Desert

The biological sand-control experimental section of the oil base road is 1.2 km in length in the hinterland of Taklamakan Desert. The road is built on the sand sheet between the high dune chains, the sand dunes on both sides of the road are relatively low, the maximum relative height difference is 6 m, and the depth of groundwater level varies in a range of 4-10 m. This paper investigates the growth status of the Holoxylon ammodendron, Tamarix and Calligonum planted under the different site conditions for the biological sand-control demonstration project along the oil base road in the hinterland of Taklamakan Desert. After the shrubs planted under the different site conditions are irrigated by saltwater, the soils are sampled for analyzing their water-salt budget. The results show that, in the construction of the biological protection system along the roads of the Tazhong desert oil field, Holoxylon ammodendron and Calligonum should be planted on the sand dunes and the sand sheets, and some water reserve measures, such as spread of peat composed of rotten mosses, water-fixing agent and clay in the shrub planting pits, should be taken for planting Tamarix. On the sand sheets where a clay layer underlies, Tamarix and Holoxylon ammodendron should be planted. In order to afforest the windbreak forests on the hardened and impervious lands between the sand dunes, some suitable technical measures must be taken.