Abstract:

Abstract: Alternan thera philoxeroides, a external bio-invasion plant, has become a serious and urgent weed problem in peanut production in China, espically 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 secure, environment-protected and (NH4)2CO3, as nitrogen fertilizer, can promote seedlings growth, increased chlorophyll content（SPAD value）, though control effect declined during late stages; 2) CW and MW had stead control effect, whereas CW maybe resulted in some impacts on environment and peanut plant.In addtion, MW was only suitable for regions with less arable land per capita for it exhausted more labor resource .