小豆田土壤处理和茎叶处理除草剂组合筛选

为筛选出对小豆田安全且防效好的除草剂,选用13种不同土壤处理和茎叶处理除草剂组合,对小豆的安全性和杂草的防效进行了研究。结果表明:13种除草剂组合处理对小豆均有不同程度的药害,并且均能不同程度地防治小豆田间杂草。处理7(10.8%高效氟吡甲禾草灵(盖草能)0.05 mL·m~(-2)+25%氟磺胺草醚0.15mL·m~(-2))和处理15(38%莠去津0.37 mL·m~(-2)+25%氟磺胺草醚0.15 mL·m~(-2);72%异丙甲草胺0.20mL·m~(-2)),药害症状不明显。处理1(38%莠去津0.37mL·m~(-2)+25%氟磺胺草醚0.15mL·m~(-2))、处理2(10%吡嘧磺隆0.04g·m~(-2)+25%氟磺胺草醚0.15mL·m~(-2))、处理4(38%莠去津0.37mL·m~(-2)+10%吡嘧磺隆0.04g·m~(-2))、处理5(48%氟乐灵0.22mL·m~(-2)+32%苄嘧磺隆0.04g·m~(-2))对小豆有轻微药害,后期可恢复。处理4和处理7不同除草剂组合对小豆田杂草的防治效果最好。综合对小豆田杂草的防治效果和对小豆产量的影响来看,处理7除草剂组合最佳,小豆田杂草防治效果最好,达到81.4%,还能最大幅度地增加小豆产量,可达210.6%。

Selectivity of Soil-applied and Spraying for Seedling Herbicides in Adzuki Bean Fields

In order to screening the hebicides combination with safety and effective contrl for adzuki bean field,taking 13 different soil-applied and spraying for adzuki bean seedling herbicides,the safety of adzuki bean and effects on weed control were studied.The results showed that all of the 13 herbicides caused injury to adzuki bean,and also prevented weeds.The symptoms of phytotoxicity caused by treatment 7(10.8% high efficiency fluorine pyrazole diclofop-methyl(Gaicaoneng) 0.05 mL·m-2+25% fluorine sulfanilamide grass ether 0.15 mL·m-2) and treatment 15(38% atrazine 0.37 mL·m-2+25% fluorine sulfanilamide grass ether 0.15 mL·m-2;72% metolachlor 0.20 mL·m-2) were not obvious,treatment 1(38% atrazine 0.37 mL·m-2+25% fluorine sulfanilamide grass ether 0.15 mL·m-2),treatment 2(10% pyrazosulfuron-ethyl 0.04 g·m-2+25% fluorine sulfanilamide grass ether 0.15 mL·m-2),treatment 4(38% atrazine 0.37 mL·m-2+10% pyrazosulfuron-ethyl 0.04 g·m-2) and treatment 5(48% trifluralin 0.22 mL·m-2+32% bensulfuron methyl 0.04 g·m-2) were slight and could recover lately.The best two effects on weed control were treatment 4 and treatment 7.By comprehensive consideration of effects on weed control in adzuki bean fields and yields of adzuki bean,treatment 7 was the best herbicide.It had the best effects on weed control reached 81.4% and could maximally increased yields of adzuki bean reached 210.6%.