药物掺混肥对甘薯和花生产量及虫蛀率的影响

针对近些年地下害虫数量迅猛增加,地下商品果类作物产量受到严重影响的现状,设置不同的颗粒农药与肥料混合,研究其在甘薯和花生种植中的施用效果。结果表明,农博士颗粒农药45.0kg/hm2与肥料600kg/hm2掺混施用能使甘薯增产5.71%,虫蛀率降低27.06个百分点;使花生增产6.02%,虫蛀率降低1.02个百分点。颗粒农药与肥料掺混施用,能降低害虫对地下商品果类农产品的危害程度,但是对肥料的肥效影响不大。甘薯试验中,农博士颗粒农药22.5kg/hm2与肥料即配即施处理的杀虫效果(虫蛀率50.84%)与处理④(农博士颗粒农药45kg/hm2与肥料混配,放置3周后施用)相当(虫蛀率50.46%),并且优于处理③(农博士颗粒农药22.5kg/hm2与肥料混配,放置3周后施用),说明肥料与颗粒农药掺混放置一段时间后可能对农药的杀虫效果有不利影响。

Effects of Pesticide-added Compound Fertilizer on Yields and Infestation Rates of Sweet Potato and Peanut

Recently,the number of underground pests increases rapidly,which seriously affects the yields of underground-fruit crops.This experiment studied the effects of application of compound fertilizer with different pesticides added on the yields and infestation rates of sweet potato and peanut.Results indicated that the treatment of mixing 45 kg/ha of Nongboshi particle pesticide and fertilizer(600 kg/ha) increased yield of sweet potato by 5.71% and decreased infestation rate by 27.06 percentage points.For peanut,mixing 45 kg/ha of Nongboshi particle pesticide and fertilizer increased its yield by 6.02% and decreased infestation rate by 1.02 percentage points.Application of pesticide-added compound fertilizer could reduce the harm of pests to underground-fruit crops,but had little effect on efficiency of the fertilizer.For sweet potato,the insecticidal effect of 22.5 kg/ha of Nongboshi particle pesticide with fertilizer applied immediately after mixing(infestation rate 50.84%)was nearly the same as the treatment of 45 kg/ha of Nongboshi particle pesticide with fertilizer applied 3 weeks after mixing(infestation rate 50.46%),but was better than the treatment of applying 22.5 kg/ha of Nongboshi particle pesticide mixed with fertilizer after laid for 3 weeks,which indicated that the insecticidal effect of pesticide-added compound fertilizer was affected by laying.