播种密度对伊犁心叶驼绒藜生长性状和生产性能的影响

心叶驼绒藜（Ceratoides ewersmanniana）具有良好的水土保持和防风固沙功能，在新疆荒漠草地植被恢复和生态建设中具有重要作用。本研究采用10个不同密度处理，探索播种密度对心叶驼绒藜生长性状和生产性能的影响。结果表明，播种密度对心叶驼绒藜生长发育、生产性能等影响很大。低密度的个体生长发育好，能形成生殖枝，达到相对高产，故认为在无灌溉条件下最合理的密度为4~30株·m-2，留苗2 666~20 000株·667 m-2。北疆心叶驼绒藜人工种植和天然补播改良草地中可适当降低播种密度。以上结果可以为心叶驼绒藜人工种植和改良草地确定合理种植密度提供科学依据。

Influence of planting density to growth and production property of Ceratoides ewersmanniana cv. LiLi

Ceratoides ewersmanniana cv.YiLi is distributed only in the northern of Xinjiang, China. It has good soil and water conservation and sand fixing function, and plays an important role in the Xinjiang desert vegetation restoration and ecological construction. This study used 10 different density treatments, and explored the influence of planting density to the growth characters and production property of C.ewersmanniana cv.YiLi. The results showed that planting density has a great influence on growth and production property of C.ewersmanniana cv.YiLi. Individual growth and development of low density was able to form a reproductive branch and reach relatively high yield, so that in the absence of irrigation density Ⅰ-Ⅴ ie 4-30 plants·m-2, preserve seedling 2 666-20 000 plants·666.7 m-2 is the most reasonable treatment strain. In the northern, cultivating the C.ewersmanniana cv.YiLi and reseeding the grassland naturally can be improved and under lower planting density. This can provide a scientific basisof a reasonable planting density to cultivate C.ewersmanniana cv.YiLi and reseed the grassland.