[1]王方琳,柴成武*,尉秋实,等. 沙埋和种子大小对沙蒿种子萌发及幼苗生长的影响[J].西北林学院学报,2020,35(6):129-134.[doi:10.3969/j.issn.1001-7461.2020.06.18]
　WANG Fang-lin,CHAI Cheng-wu*,YU Qiu-shi,et al. Effects of Sand Burying and Seed Size on the Germination and Seedling Growth of Artemisia desertorum[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2020,35(6):129-134.[doi:10.3969/j.issn.1001-7461.2020.06.18]
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 沙埋和种子大小对沙蒿种子萌发及幼苗生长的影响()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第35卷
期数:
2020年第6期
页码:
129-134
栏目:
出版日期:
2020-11-30

文章信息/Info

Title:
 Effects of Sand Burying and Seed Size on the Germination and Seedling Growth of Artemisia desertorum
文章编号:
1001-7461(2020)06-0129-06
作者:
 王方琳; 柴成武*; 尉秋实; 纪永福; 王飞; 朱淑娟
 (甘肃省治沙研究所 甘肃省荒漠化与风沙灾害防治重点实验室， 甘肃 武威 733000)
Author(s):
 WANG Fang-lin; CHAI Cheng-wu*; YU Qiu-shi; JI Yong-fu; WANG Fei; ZHU Shu-juan
 (The State Key Laboratory of Desertification Combating Prevention and Sandstorm Disaster,Gansu Province & Gansu Desert Control Research Institute,Wuwei 733000,Gansu,China)
关键词:
 ; 沙蒿; 沙埋深度; 种子大小; 种子萌发; 幼苗生长
Keywords:
Artemisia desertorum;  sand burial depth;  seed size;  seed germination;  seedling growth
分类号:
S723.13
DOI:
10.3969/j.issn.1001-7461.2020.06.18
文献标志码:
A
摘要:
 研究实验室条件下不同深度的沙埋和种子大小对沙蒿种子萌发及幼苗生长的影响。结果表明，沙埋深度对沙蒿的种子萌发率、休眠率、幼苗出土率及生物量均有显著影响。没有沙土覆盖时沙蒿种子即可萌发；0.5~5 cm的浅层沙埋下，种子萌发率、出苗率、幼苗存活率及生物量最高，休眠率最低；沙埋深度>5 cm 时，沙蒿的种子萌发率、出苗率、幼苗存活率及生物量随沙埋深度增加显著降低，而休眠率却显著升高；沙埋深度为12 cm时，种子不出苗，幼苗也不能存活。种子大小对沙蒿种子萌发率、出苗率、幼苗存活率及休眠率均无显著影响，但对幼苗生物量大小具有显著影响，在0~12 cm的沙埋深度中，除5 cm和7 cm深度下中粒种子和小粒种子萌发的幼苗的生物量间没有显著差异外，其他深度处理时，大粒种子萌发的幼苗的生物量显著高于同一沙埋深度下中粒种子萌发的幼苗生物量，后者又显著高于小粒种子萌发幼苗的生物量，因此研究认为，沙蒿种子最适宜沙埋深度为 1~ 3 cm的浅层沙埋。
Abstract:
 The effects of different sand burial depths and seed sizes on the seed germination and seedling growth of Artemisia desertorum were studied under laboratory conditions.The results showed that the seed germination rate,dormancy rate,seedling emergence rate and biomass of A.desertorum were significantly affected by the sand burial depths.The seeds could germinate without sand burying.The germination rate,seedling emergence rate,seedling survival rate and biomass were the highest,and the dormancy rate was the lowest when the burial depths were 0.5-5 cm.When the burial depths were more than 5 cm,the seed germination rate,emergence rate,seedling survival rate and biomass decreased significantly with sand burial depth,but the dormancy rate increased significantly.When the sand burial depth was 12 cm,the seeds did not emerge,and the seedlings could not survive.Seed size had no significant effects on seed germination rate,seedling emergence rate,seedling survival rate and dormancy rate,but had significant effect on seedling biomass.The biomass of seedlings from large-size seeds was significantly higher than that from medium-size seeds with the same sand burial depth,and the biomass of seedlings from medium-size seeds was significantly higher than from small-size seeds in the same sand burial depth ranged from 0-12 cm.Under 5 cm and 7 cm depths,no significant differences were found in biomass of seedlings from different seed sizes.Therefore,it is considered that the seed of A.desertorum is suitable for sand burial depth of 1-3 cm.

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备注/Memo

备注/Memo:
 收稿日期：2019-12-26修回日期：2020-05-22
基金项目：甘肃省林业科技计划项目（2017kj024）；国家自然科学基金项目（41761051，41661064，31700339）；中央财政林业科技推广示范项目（［2017］ZYTG14）。
作者简介：王方琳，硕士，副研究员。研究方向：荒漠植物生态生理。E-mail:wangfanglin2008@163.com
*通信作者：柴成武，硕士，副研究员。研究方向：水土保持与荒漠化防治。E-mail:chaichw@163.com
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