本試驗於民國71年2~8月分別於清水、台中、嘉義及水上四處測定asulam+dalapon, triclopyr及velpar三種殺草劑在非耕作地之除草效果，以glyphosate為對照進行比較。試驗結果指出，asulam+dalapon適合禾本科雜草之防除，用量2.50+3.80kg ai/ha即可，triclopyr則對闊葉草之防除效果較佳，用量1.85~2.50 kg ai/ha之間，而velpar則可防除上述兩類雜草，除草效果與glyphosate類似或較佳，且更具土壤殘效作用，為一相當理想的非農耕地殺草劑。

The effects of asulam 十dalapon ， triclopyr and velpar onthe weed control of non-crop land were tested. Four locationsand three replications were adopted. The results indicated thatasulam + dalapon at the rate of 2.50 十3.80 kg ai[ha gave goodcontrol of grasses. Triclopyr at the rate of 1. 85-2.50 kg ai[hawas very effective to broadleaves. Velpar was the most suitableherbicide for the weed control on non-crop land , which wassimilar or even better than g 1 yphosate . The rate of 4.50 kgai Iha gave good control of weeds.Additional index words; Paraquat , glyphosate , dalapon ,target , triclopyr , velpar , Portulaca oleracea , Eleusine indica ,Cynodon dactylon , lmperata cylindrica , Cyperus rotundus ,Bidens bi pinnate , Oxalis spp. Alternanthera sessilis, P aspalumspp. Hyptis rhomboides , Polygonum plebeium , Erigeron spp.