论文部分内容阅读
大棚内施放农药发烟弹在病虫预防期和发生初期均可使用。每个大棚要依据面积不同放置农药发烟弹2～4枚,一般施放3～4次,每次间隔5～7天,病情严重时可酌情加量。施放最佳时间宜傍晚收工时,此时地表温度开始下降,有利于农药烟雾逐渐降至地表,彻底杀菌杀虫。另外,作物叶子傍晚时呼吸加强,也有利于农药烟雾的吸收。使用时,要密闭大棚和关闭门窗,将发烟弹均匀地摆放在大棚内中间走道上,用点燃的香头从壳体上孔插入,待点燃发烟后,横放在地面上,由棚里向外逐个点燃后,操作人员立刻关闭大棚离开,闭棚时间不得少于4个小时。
Pesticide chimney can be applied in greenhouse during the prevention and early stage of disease and pest. Each shed to be placed according to the area of different pesticide smoke bombs 2 to 4, the general cast 3 to 4 times, each interval of 5 to 7 days, the severity of the disease may be appropriate to increase. Cast the best time should be evening evening, when the surface temperature began to decline, is conducive to pesticide smoke gradually dropped to the surface, complete sterilization insecticide. In addition, crop leaves in the evening to enhance breathing, but also conducive to the absorption of pesticide smoke. Use, to close the greenhouse and the windows and doors closed, the smoke bombs evenly placed in the middle of the greenhouse walkway, with incense head lit from the shell on the hole into the lit cigarette to be lit, placed on the ground horizontally, from After shed one by one ignited, the operator immediately shut down the shed, closed shed time of not less than 4 hours.