花生地喜旱莲子草防除方法比较研究

摘 要：喜旱莲子草 (Alternan Thera philoxeroides Griseb)是一种生物入侵恶性杂草，已成为我国特别是南方省份花生生产中急待解决的草害问题。本试验通过比较熏蒸除草(FWCN)、化学防治(CW)、人工除草(MW)和不除草（NW）4种防治方法的效果，试图找出控制喜旱莲子草的生态安全有效方法。结果表明，1)熏蒸除草在苗期前30d内防效最高，且碳酸氢氨作为氮肥能有效促进花生苗期生长，增高叶绿素含量（SPAD值），相对安全、环保，后期防效略有下降；2)化学防治和人工除草对喜旱莲子草防治效果较稳定，然而化学药剂残留可能对环境有影响，且操作不慎易伤害花生，人工除草则人力资源消耗大，只适合人多地少的地区。

A Comparative Study on Control of Alternan Thera Philoxeroides in Peanut Field

Alternan thera philoxeroides , a external bio-invasion plant, has become a serious and urgent weed problem in peanut production in China, especially in southern regions. In order to find a efficient eco-safety method to control it, a experiment was conducted by compare the effects of four treatments i.e. fumigation weeding with (NH4)2CO3 (FWCN), chemical weeding (CW), manual weeding (MW), no weeding (NW). The result showed that: 1) FWCN had most control effect during early stage of 30d, was relatively secur...