【摘要】 该文以无人机的飞行高度和飞行速度为试验因素,研究草地植保过程中,试验因素在6组不同作业参数组合状态下对雾滴覆盖密度和雾滴覆盖均匀度的影响。试验结果表明:不同作业参数组合下采样点的雾滴覆盖密度和雾滴覆盖均匀度不同;雾滴覆盖密度总体变化范围为3.71～63.29个/cm~2;雾滴覆盖均匀度总体变化范围为24.65%～49.10%;当飞行高度为1.5 m,飞行速度为4和5 m/s时,试验指标均呈现最优状态;通过方差分析,飞行高度对试验指标的影响均为极显著(P <0.01),飞行速度对试验指标的影响均为显著(P <0.05);通过Duncan’s新复极差检验各组试验得出试验指标的差异显著情况(P <0.05)。更多还原

【Abstract】 Flight height and flight speed of the UAVs were used as test factors.Effects of 6 different test factors combinations about flight height and flight speed on the two test indexes(coverage density of droplets and coverage uniformity of droplets) were studied.Test results showed that under different test factors combinations,coverage density of droplets at different sampling points and coverage uniformity of droplets at each sampling zone was obtained.The overall change of coverage density of droplets ranged from 3.71-63.29 drop/cm~2;and the overall change of coverage uniformity of droplets ranged from 24.65%-49.1%.When flight height was 1.5 m and flight speed was 4 or 5 m/s,two test indexes(coverage density of droplets and coverage uniformity of droplets) showed the optimal state.Through variance analysis,effects of flight height on coverage density of droplets and coverage uniformity of droplets were extremely significant(P < 0.01),effects of flight speed on coverage density of droplets and coverage uniformity of droplets were significant(P < 0.05).By Duncan’s multiple range tests,significant differences in every test index from each group were analyzed(P < 0.05).更多还原