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选择山东沙质海岸防护林试验地，研究对比了根际覆盖地膜、麦糠、麦糠＋地膜和裸地土壤的水分状况和造林成活率．结果表明，不同覆盖处理对防止０～１５ｃｍ土层土壤水分散失具有良好的效果，３种覆盖处理比较，以覆草的保水效果最好，覆草后８天内土壤水分损失率仅有１４．７２％，是对照的４５．８１％，覆膜和覆草＋膜效果差异不明显，土壤水分损失率分别为１６．７７％和１６．５７％，都明显低于裸地的３１．７４％．但不同覆盖处理对１５～３０ｃｍ土层土壤水分状况没有明显的影响．覆盖处理对造林成活率的影响与土壤水分状况具有较好的一致性，表现为覆草处理的造林成活率最高，平均达到了８７．３％，对照造林成活率最低，为７９．３％．
Select the sandy coast of Shandong Shelterbelt experimental sites, the study compared the rhizosphere mulch, wheat bran, wheat bran + plastic film and bare soil water conditions and afforestation survival rate. The results showed that different cover treatments had good effects on preventing soil water loss in 0 ~ 15cm soil layer. Compared with three kinds of cover treatments, the best water holding capacity was mulched grass, soil moisture loss rate was only 14.72 %, Which is 45.81% of the control. There is no obvious difference between the film and the straw + film. The soil water loss rates are 16.77% and 16.57% respectively, which are obviously lower than those of the bare land (31.74%). However, no significant effect of different mulching treatments on soil moisture status in 15 ~ 30cm soil layer. The coverage of afforestation survival rate had the same consistency with the soil moisture status. The results showed that the coverage rate of afforestation with straw mulching was the highest, reaching 87.3% on average, and the lowest rate of contrast afforestation was 79.3%.