2021年10月17日 星期日
2种生物炭浸提液对4种杜鹃属植物种子萌发的影响
Effects of two biochar extracts on seed germination of four Rhododendron species
2021年 第30卷 第1期 页码[72-74]    下载全文[0.7MB]  
Abstract

 Taking Rhododendron calophytum Franch., R. molle (Blume) G. Don, R. delavayi Franch., and R. decorum Franch. as research objects, effects of corncob biochar and rice husk biochar extracts with biochar water ratios of 1∶30, 1∶15, and 1∶7.5 on their seed germination characteristics were compared. The results show that compared with the control (deionized water), seed germination rate and germination index of R. calophytum, R. molle, and R. delavayi in corncob biochar extract treatment group with biochar water ratio of 1∶30 and three rice husk biochar extract treatment groups all increase significantly, and their germination time lag is shortened; seed germination rate of the three species in corncob biochar extract treatment groups with biochar water ratios of 1∶15 and 1∶7.5 decreases. In addition, seed germination rate of three species in rice husk biochar extract treatment groups with biochar water ratios of 1∶15 and 1∶7.5 is evidently higher than that in corncob biochar extract treatment groups with the same biochar water ratio. Overall, corncob biochar and rice husk biochar extracts can inhibit seed germination of R. decorum, and the higher the biochar water ratio, the stronger the inhibitory effect. In conclusion, there are differences in effects of corncob biochar and rice husk biochar extracts on seed germination of species in  Rhododendron Linn., and there is interspecific difference in influence effect.

关键词杜鹃属; 玉米芯炭; 稻壳炭; 炭水比; 种子萌发
Key wordsRhododendron Linn.; corncob biochar; rice husk biochar; biochar water ratio; seed germination
作者卜晓莉1, 姬慧娟2, 马文宝2, 薛建辉1,3
所在单位1. 南京林业大学 南方现代林业协同创新中心, 江苏 南京210037;2. 四川省林业科学研究院 森林和湿地生态恢复与保育四川重点实验室, 四川 成都 610081; 3. 江苏省中国科学院植物研究所(南京中山植物园), 江苏 南京 210014
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基金项目四川省科技计划项目(应用基础研究)(2020YJ0470); 四川省财政专项项目(2020CZZX01); 国家重点研发计划项目(2016YFC0502605); 江苏省高校优势学科建设工程(PAPD)