沙质海岸前沿厚藤不同方式扦插效果分析

Effect of Ipomoea pescaprae Cutting by Different Ways on Sandy Coast

在沙质海岸前沿对厚藤进行不同插穗长度和密度的扦插试验,结果表明:3种插穗长度成活率没有明显差异,扦插繁殖易于成活,选择50cm的插穗长度具有良好的生长效果;3种种植密度对盖度、样方生物量影响较大,处理间达到极显著水平。综合考虑试验结果和生产实际,建议厚藤扦插种植株行距范围为20cm×20cm～40cm×40cm,其地表覆盖效果和固沙能力较优。

At the fore sandy coast,experiment on the length,density&biomass of different cuttings of Ipomoea pescaprae were tested,result shows that there is no significant difference in survival rate among the three kinds of lengths of cuttings,cutting propagation is easy to survive,even if the survival rate of cuttings in barren sandy loam could reach more than 90%survival rate in one month,the cuttings length with 50 cm have optimal growth effect;the three planting densities have great influence on the coverage,the treatments reached a very significant level,and the difference among the biomass of the three planting densities reaches a very significant level,comprehensive test result&practical operation were considered,it is suggested that the row spacing of planting plants have optimal surface coverage&sand fixation ability in the range of 20 cm×20 cm-40 cm×40 cm.