40%野麦畏乳油防治西藏地区野燕麦的配方改进及田间药效试验

Modification of Triallate 40% EC for Controlling Wild Oats in Tibet Region

西藏地区因特殊的地理环境及气候条件,致使40%野麦畏乳油防除野燕麦的药效降低,本文通过试验选择了一种挥发性小、溶解性强的溶剂A,配制的40%野麦畏乳油具有良好的乳液稳定性、低温稳定性和热贮稳定性。同时田间药效试验结果表明使用溶剂A配制的40%野麦畏乳油,播前土壤处理对西藏的拉萨、日喀则、昌都三个地区青稞田中的野燕麦具有较好防效,且优于对照药剂40%野麦畏乳油,这说明使用溶剂A配制的40%野麦畏乳油的增效作用显著,适宜在西藏地区推广使用。

The special geographical environment and climatic conditions in Tibet caused the reducing of effects of triallate 40% EC for controlling wild oats. The modified triallate 40% EC by using a smaller volatility and stronger solubility of solvent A was lested in field. The results of field experiments showed that, in Lhasa, Rikeze and Chang Du region, the soil treatment before seeding, using modified triallate 40% EC, had excellent protective effect against the wild oats in field. Therefore, the modified triallate 40% EC was proposed to be applied widely in Tibet region.