摘要
采用不同浓度的多效唑控制橘园的主要杂草,以探索对橘园杂草高度与密度有效控制的途径。结果表明:在试验剂量900～1800g/hm2范围内,多效唑对禾本科杂草的生长抑制作用随处理剂量的加大而增强,以1350g/hm2剂量的多效唑处理效果最为理想。3种剂量的多效唑处理均对禾本科杂草的分蘖具有强烈的促进作用,使田间杂草密度大大增加;对2种阔叶杂草——一年蓬和觅菜的生长表现出强烈的抑制作用,但未达到理想的控制高度。
The experiment tried to find the effective methods of controlling the vital weeds＇ height and density with different concentrations of PPP333 in orange orchard. The results showed that：In the PPP333 dose range 900 ～1 800 g/hm2,the growth of the grass was inhibited with the increasing of PPP333. The ideal treatment of PPP333 was 1 350 g/hm2. The three doses of PPP333 were all with a strong role in promoting the tillering of grass weeds,so that weed density increased greatly. The results of two kinds of broad-leaved weeds——Erigeron annuus（L.）Pers and Amaranth also showed a strong inhibitory effect,but the tests did not achieve the desired control height.
出处
《现代农业科技》
2010年第18期141-142,145,共3页
Modern Agricultural Science and Technology
基金
国家现代农业技术创新(柑橘)体系(编号:MOT)
湖南省教育厅科研项目(编号:08D103)
关键词
多效唑
橘园
杂草
效用研究
PPP333
orange orchard
weed
effectiveness research
