论文部分内容阅读
玉米病虫害的药剂防治主要在玉米生长的中后期进行,但由于株高叶茂,田间喷药困难。热力烟雾机采用一些油剂作为农药的载体,经输导管在高温点(350~400℃)时瞬间气化,形成热雾且分布均匀,可沿田埂施药。试验以机动弥雾机喷雾防治为对照,在玉米田进行了热力烟雾机热雾粒田间不同水平距离和垂直高度的药剂雾滴分布规律和对玉米南方锈病、纹枯病、蚜虫的防效试验。结果表明,使用热力烟雾机防治效果高于机动弥雾机喷雾防治效果,热力烟雾机防治有效距离为25 m以上,热雾粒数量在田间不同水平距离(0~25 m)、垂直高度(0~2 m)范围内比较均匀,正面热雾粒附着量为150~300粒.cm-2,背面热雾粒附着量为50~140 cm2粒。
Corn pests and diseases prevention and treatment of pesticides mainly in the late maize growth, but because of tall leaves, field spraying difficult. Thermodynamic smoke machine using some oil as a carrier of pesticides, through the catheter at a high temperature (350 ~ 400 ℃) instantaneous gasification, the formation of a hot mist and evenly distributed, can be applied along the field 埂. In the experiment, the spray control of the motorized mist sprayer was used as the control. The distribution of the spray droplets and the control effect on the southern rust, the sheath blight and the aphid of maize were conducted in the fields of different temperatures and vertical altitudes. . The results showed that the control efficiency of the thermal fogger was higher than that of the mechanical fogger. The effective distance of the thermal fogger was more than 25 m. The number of the hot foggy fog in the field was different at different horizontal distances (0 ~ 25 m) and vertical height (0 ~ 2 m). The amount of hot mist deposited on the front was 150-300 cm-2 and the amount of hot mist on the back was 50-140 cm2.