Based on plot experiment,the herbicidat effect of DPX-A7881 was observed The results show that DPX-A7881 has high herbicidal effect. Its phytotoxicity to rape and its sec- ondary phytotoxitity to the rotate paddy rice with application does of higher than 15 gAI/hm2 are 30.96 %～57,81 % of rape yield reduction and 9.34 %～23.20% of rotate paddy rice yield.
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