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用于土壤的除草剂常与液体肥混用,可降低成本和提高时效。硫代硫酸铵(ATS)是一种通用的含硫液体肥,能降低土壤中微生物的作用速度。本文报道ATS对土用微生物降解除草剂效应期的影响。试验在温室和生长箱进行,采用粗壤土和粗粉砂土。当每克土施用0.3～0.8ml的ATS时,能延长除草剂2,4—D、甲绿胺、丙草丹、cinmethylin、燕草畏的有效控制期,但ATS对异丁草丹或异丙甲草胺的除草有效期影响非常小。延长2,4—D和丙草丹效应期的最低ATS用量为0.15ml/kg土(假设被耕土的容重为1.0,平均土层深度5cm,虽然就目前来说ATS这个用量费用太大,但是由于ATS应用广泛并且某些土用除草剂需要延长其在土壤中的寿命,所以对ATS花费太大的旧观念应该重新进行估价。
Herbicides used in soils are often blended with liquid fertilizers to reduce costs and improve aging. Ammonium thiosulfate (ATS) is a versatile sulfur-containing liquid fertilizer that reduces the rate of microbial action in the soil. This paper reports the effect of ATS on the effect of herbicides on soil microbial degradation. Tests were conducted in greenhouses and growth chambers using coarse loam and coarse silt. When 0.3 ~ 0.8ml ATS was applied per gram of soil, the effective control period of herbicide 2,4-D, mevalonate, primycin, cinmethylin, Metilachlor has a very small effect on the weed control period. The minimum ATS to extend the 2,4-D and prophylaxis period is 0.15 ml / kg of soil (assuming a trowel bulk density of 1.0 and an average soil depth of 5 cm, although for now it is too expensive to use ATS, As ATS is widely used and some indigenous herbicides need to extend their life in soils, the old perception of spending too much on ATS should be re-evaluated.