Pollination parameter optimization and field verification of'Korla fragrant pear'DJI T50 unmanned aerial vehicle
In order to improve the accuracy of unmanned aerial vehicle(UAV)pollination operation of'Korla fragrant pear',DJI T50 UAV was selected in this study.The orthogonal test of three factors(operation speed,operation height,spraying amount per 667 m2)and three levels was used to compare the distribution effects of droplet coverage,droplet density and droplet deposition.The operation parameters were screened and the field pollination effect was verified.The results showed that under the condition that the environmental wind speed did not exceed 1.5 m/s,the optimal operating parameters of DJI T50 UAV for spindle-shaped'Korla fragrant pear'pollination were as follows operating speed of 4 m/s,and operating height of 4.5 m from the top of the tree,spraying amount per 667 m2of 4 L.The inflorescence fruit setting rate of field pollination was 75.56％,and the flower fruit setting rate was 32.87％.The main factors affecting the effect of droplets in the upper layer of'Korla fragrant pear'tree canopy are the spray amount per 667 m2,the height of operation and the speed of operation.The main factors affecting the effect of droplets in the middle and lower layers of tree canopies are the spray amount per 667 m2,the speed of operation and the height of operation.
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