井冈山大学学报（自然科学版）Issue(6)：96-101,6.DOI:10.3969/j.issn.1674-8085.2012.06.022
播种深度对入侵植物三叶鬼针草种子出苗和幼苗生长的影响
EFFECTS OF SEEDING DEPTH ON SEEDLING EMERGENCE AND GROWTH OF INVASIVE PLANT BIDENS PILOSA L.
摘要
Abstract
Taking invasive plant Bidens pilosa as material, its seedling emergence and growth under sand burial 0, 0.50, 1.00 and 1.50 cm was studied by bioassay in laboratory. The results showed that the seedling emergence rate decreased with increasing seeding depth, being the highest and lowest seedling emergence rate of 80.66% and 40.66% when the seeding depth was 0 and 1.50 cm respectively, and there was significant difference between under 1.50 cm and under 0, 0.50, 1.00 cm. With the increase of seeding depth, the seedling root length, number and dry weight increased first but decreased then, and there was no significant difference between under 0.50 cm and under 1.00 cm, but it was obviously higher under them than under 1.50 cm. Seedling height decreased with the increasing seeding depth, and it was obviously lower under 1.50 cm than under 0, 0.50 and 1.00 cm. It could be concluded that a seeding depth of 0.50~1.00 cm could be more suitable to B. pilosa seedling emergence and growth, while the seeding depth of 0 or 1.50 cm could be unfavorable to that.关键词
播种/入侵植物/三叶鬼针草/种子出苗/幼苗生长Key words
seeding/invasive plant/Bidens pilosa L./seed emergence/seedling growth分类
农业科技引用本文复制引用
周兵,闫小红,肖宜安,胡文海,曾建军,李晓红..播种深度对入侵植物三叶鬼针草种子出苗和幼苗生长的影响[J].井冈山大学学报（自然科学版）,2012,(6):96-101,6.基金项目
国家林业科技支撑计划专题项目(2008BADB0B0504) （2008BADB0B0504）
江西省自然科学基金项目(20114BAB214011) （20114BAB214011）
江西省教育厅科技项目(GJJ10689) （GJJ10689）
