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以房山栎和夏栎种子为材料,研究去碗疤、去皮、去除1/2子叶、去除2/3子叶对种子萌发和生长的影响。结果表明：1）房山栎和夏栎存在延迟萌发、出苗不整齐和只出根不萌芽现象。2）与对照相比,去皮（全子叶）、切除1/2子叶和2/3子叶均显著降低房山栎和夏栎种子根和芽的平均萌发时间,提高根和芽的萌发整齐性指数,增加根和芽的活力指数;去皮和1/2子叶处理显著增加种子出根率、萌芽率、根长和苗高,而切除2/3子叶处理种子的出根率和萌芽率有显著提高,但根长和苗高与对照没有显著差异。3）与全子叶比,去除子叶过多（2/3）显著降低种子的出根率和萌芽率。4）去碗疤显著降低房山栎和夏栎种子的平均发芽时间,但萌发整齐性指数、出根率、萌芽率、活力指数、根长和苗高没有显著增加。因此,去皮（全子叶）和去除1/2子叶处理效果较好,能有效促进房山栎和夏栎种子萌发和整齐性出苗。 The germination delay and irregulation of Quercus seeds affect the seedling quality and growth. In this study we investigated effects of different mechanical treatments, including removing cup scar （RS）, removing pericarp （sound cotyledon） （RP/SC）, removing pericarp and cutting off 1/2 cotyledon （HC）, removing pericarp and cutting off 2/3 cotyledon （TC）, on seed germination and seedling growth of Q. ×fangshanensis and Q. robur. The results showed that 1） both species had characteristics of delayed and irregular germination and emerged roots without shoots; 2） compared with untreated control（CK）, RP, HC and TC significantly shortened the root

Biogeotextiles can be used to facilitate the formation of vegetation cover and to reduce soil erosion. Studies have demonstrated that only biogeotextile or vegetation cover can greatly reduce soil ... erosion. However, information about the effects of the combination of biogeotextile and vegetation cover on soil erosion is still limited, despite that the combination is the commonly practical form for bare road slope protection. Experimental plots, consisting of a relatively loose surface layer and a compacted sublayer, were constructed using movable soil-bin trolleys (200 × 100 × 40 cm3) filled with silt loam sieved through 1-cm screen. The plots were seeded with a seed mixture of tall fescue (Festuca elata Keng ex E. Alexeev) and alfalfa (Medicago sativa L.) as a grass-legume regime. Then the plots were covered with three types of biogeotextile, i.e., coir blanket (CB), mixed coir-straw blanket (MB), and straw blanket (SB). A bare slope (BS) was constructed as the control experiment. Irrigation was applied to ensure vegetation germination and growth. Plant characteristics were measured after every 20 days. Laboratory simulated rainfall of 71 mm/h intensity was applied to each plot for 60 min after 20, 40, and 60 days. Surface runoff and sediment were collected every 5 min during rainfall. The results showed that the MB and SB promoted increased total emergence density of plants by 47% and 23%, respectively, compared to case of vegetation growth without biogeotextiles. The dense structure of the CB impeded the emergence of alfalfa, leading to 9% lower total emergence density. Compared with bare slope (0 day BS), biogeotextiles increased runoff by 3% (MB)–19% (CB) and reduced erosion by 96% (MB and SB)–98% (CB). After 60 days, vegetation cover reduced runoff by 54% and reduced erosion by 81% compared with the BS case. The combination of biogeotextile and vegetation cover reduced runoff by 44% (CB)–62% (SB) and reduced erosion by no less than 99% compared to the BS case. Compared with biogeotextile alone, the combination reduced runoff by 53% (CB)–64% (SB). Compared with vegetation cover alone, the combination reduced erosion by 94% (MB)–99% (CB). The combination takes advantages of vegetation cover for long-term protection and of biogeotextile for facilitating the formation of vegetation cover and immediate erosion control. Thus, the combination is a better choice for road slope protection in northern China. These findings may promote the understanding of how biogeotextiles and vegetation cover work together for runoff and erosion control on bare slopes. In future research more attention should be paid to the selection of plant species and biogeotextile types to avoid impediment by the biogeotextile on the formation of vegetation cover like CB affected alfalfa in this study. več