水花生生长抑制剂与防治技术研究

Research on Altemanthera philoxeroides Growth Inhibitor and the Control Technology

针对外来入侵植物水花生对农林渔业生产造成的严重影响,采用植物对某种营养元素的敏感性原理,筛选出水花生敏感的物质,结合叶面喷施肥配置出A、B、C三种水花生生长抑制剂配方;再采用水溶液喷施的方式对水花生进行不同浓度处理,观察测定水花生的生理指标,筛选出最佳的防治水花生配方及处理浓度。研究结果表明,随着处理浓度的升高,生长抑制剂对水花生的生物量、叶绿素含量的影响逐渐增加,A、B配方的防治效果较好,且最佳处理浓度为2%。

Altemanthera philoxeroides was alien invasive species that became environmental problems due to its tremendous effects on agriculture, forestry and fisheries production. This papeer used the theory of plant＇s sensitivity to nutrient elements, chose the Altemanthera philoxeroides＇ sensitivity elements, and added some foliar fertilization, prepared three kinds of growth inhibitor formula A, B and C, sprayed with different concentrations of A, B and C, measured its physiological indexes and surveyed the best treatment and concentration for the prevention of Altemanthera philoxeroides. The results showed that the effect of growth inhibitor to Aitemanthera philoxeroides＂ biomass and chlorophyll contents strengthened gradually, the best formulas were A and B with concentration of 2 %.