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| Effects of flight parameters of plant protection unmanned aerial vehicles(UAVs) on rice cadmium reduction via spraying of zinc-manganese leaf inhibitor |
| Received:July 31, 2021 |
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| KeyWord:plant protection unmanned aerial vehicles(UAVs);rice;cadmium (Cd);flight parameter;zinc-manganese leaf inhibitor |
| Author Name | Affiliation | E-mail | | LONG Zhifang | Bureau of Agriculture and Rural Affairs of Heshan District Yiyang City, Yiyang 413002, China | | | HUANG Rui | Hunan Institute of Agri-Environment and Ecology, Changsha 410125, China | | | WANG Jihong | Business School of Hunan Agricultural University, Changsha 410125, China | 510180952@qq.com | | LIU Xiang | Hunan Meixinlong Ecological Environmental Protection Technology Co., Ltd, Changsha 410128, China | | | LIU Guiyang | Hunan Meixinlong Ecological Environmental Protection Technology Co., Ltd, Changsha 410128, China | |
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| Abstract: |
| The application of a foliar inhibitor and control agent via plant protection unmanned aerial vehicles(UAVs) conducive to improving spraying uniformity, reducing labor cost, and improving operation efficiency. To improve the field operation specification of plant protection UAVs and ensure the technical parameters of the operation, the study investigated the large DaJiang T16 plant protection UAV, and studied the optimal operation parameters for plant protection UAVs to produce cadmium reducing effects in rice by spraying zinc-manganese leaf inhibitor. Results highlighted that the optimal operation parameters were spraying foliar inhibitor mixed with water at a percentage of 12%, with a total nozzle flow rate of 3.6 L·min-1, a flight altitude of 3 m, and speed of 5 m·s-1, respectively. Moreover, results showed that the Cd reduction rates of brown rice, Huanghuazhan and Xiangwanxian 13, in the spraying area were significantly decearsed by 52.7% and 62.1%, respectively, in the second year when the foliar inhibitor spraying was performed under optimal working parameters. |
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