期刊论文

中文

湖南农业科学

1006-060X

2014

08

28-31

10.3969/j.issn.1006-060X.2014.08.010

国家自然科学基金项目（31100310）； 国家“十二五”科技支撑计划课题（2012BAD15B04）；

本校为第一机构

采用群落生态学方法,在长沙市望城区一持续30 a的长期定位试验基地调查9种施肥方式对早稻田间杂草生物多样性的影响。结果表明:早稻田共发现杂草10种。不同施肥处理小区中杂草种类以施N、P、K肥和稻草处理最少,只施N、K化肥处理最高（8种）;以稗（Echinochloa crusgalli）、鸭舌草（Monochoria vaginalis）、矮慈姑（Sagittaria pygmaea）和双穗雀稗（Paspalum distichum）4种杂草发生密度较大,它们分别在不同施肥处理中占据优势。N、P、K肥平衡施用和有机无机肥配施处理,促进了早稻的生长,水稻植株繁茂,光照透过率低,早稻良好的长势限制了稻田杂草对土壤水、肥及光照的利用,进而抑制杂草的生长...

The effects of nine different fertilization methods on biodiversity of weeds in early rice field were investigated by synecology method in a base in Wangcheng County of Changsha City where conducting long-term fixed experiment for 30 a constantly. The results showed that total 10 weed species was found in early rice field; among different fertilization treatments, the treatments applied with nitrogen fertilizer (N), phosphorus fertilizer (P), potassium fertilizer (K) and straw had the least weed species, and the treatments applized with nitrogen fertilizer and potassium fertilizer had the most...