摘要
库布齐沙地植被恢复中的菌根技术研究 ,注重于因地制宜、适菌适技。对此 ,利用当地A、B两种沙壤条件并对其作加入草炭和不加入草炭条件处理 ,选用适合当地造林树种油松、樟子松进行室内模拟实验及野外实地小型造林试验 ,菌剂以单菌剂、组合菌剂方式实施。室内模拟试验结果表明 ,单菌剂对油松幼苗作用效果为 :Cr >Ra >Li>Hm。双组合菌剂Ra +Li、Hm +Li和Ra+Cr接种的幼苗对草炭的依赖性不强。选择出Cr和Ra菌根菌剂为沙地植被恢复较为适合的菌剂。油松和樟子松两树种无论施单菌剂或双组合菌剂 ,油松幼苗长势均优于樟子松幼苗。造林试验结果表明 ,在同一块样地菌剂处理 ,三合一优于二合一菌剂组合。接种菌根菌剂幼苗地上生物量高于施入复混肥的幼苗。不同样地菌剂处理的幼苗成活率在个别菌剂组合中低于复混肥。因个别菌剂培养周期不足而致使其菌丝体与基质发酵不完全 ,而遇到造林基地干旱 ,土壤温度升高 ,导致基质仍再发酵、腐熟 ,这就使部分生长较弱的幼苗受到了伤害 ,因而幼苗成活率低。
In Kubuqi sandland adjusting measures to local conditions and spots were emphasized particularly to restore vegetation with mycorrhizal technology.According to the local sand soil condition,A and B,which were treated with meadow peat or without,respectively,were used,and the local planting species,Pinus tablaeformis and P.sylvestris were selected,while the single innoculum and double innoculums were brought into effect.The results in indoor simulated experiments showed that:the single innoculum effects on P.tablaeformis was in order of Cr> Ra >Li >Hm.It was not strongly dependent on meadow peat for seedlings inoculated in double combination innoculum Ra+Li,Hm+Lih and Ra+Cr.But all of the seedlings in CK soil without meadow peat were not growing.Cr and Ra were recognized as the better innoculums for the restoration of sand vegetation.P.tablaeformis growth potential was higher than P.sylvestris whether using single innoculum or double combination.The results in outdoor minitype planting trials showed that:at the same plot three combination innoculum was better than double combination.The seedling biomass inoculated mycorrhizal innoculum was higher than that used compound fertilizers.Survival rate of seedlings treated with inoculums at different plots was lower than that applying compound fertilizers.It was conferred that due to time short mycelium and medium were not completely fermented in some of the cultured individuals.In combination with drought and soil temperature rising,the medium continue fermenting and decaying,which injured the relatively weak seedlings.Therefore the survival rate of seedlings was low.
出处
《生态学杂志》
CAS
CSCD
北大核心
2004年第5期236-240,共5页
Chinese Journal of Ecology
基金
国家计委(计高技2001-1867)
中国科学院知识创新重要方向资助项目(KZCX-SW-416
SCXZY0108)
关键词
沙地植被恢复
菌根技术
油松
樟子松
restoration of sand vegetation,mycorrhizae technology,Pinus tablaeformis,Pinus sylvestris.
