PDF
Full
Outline
To compare the deposition patterns of spray droplets on different parts of wheat plants and their impact on the field control efficacy against wheat powdery mildew during daytime and nighttime operations of agricultural drones, a 20% tebuconazole·fluopyram SC was used as the test agent to conduct daytime and nighttime drone spraying trials. Parameters such as droplet deposition amount, droplet density, and coverage in the wheat canopy, as well as the control efficacy against wheat powdery mildew 7 and 14 days after treatment, were analyzed. The results showed that under the same spray volume and droplet size, daytime operations resulted in higher droplet deposition and coverage compared to nighttime, while droplet density was higher at night than during the day, averaging 2.27% higher. Analysis of deposition effects across different canopy layers revealed that droplet density, coverage, and deposition amount decreased sequentially in the flag leaf, penultimate leaf, third leaf from the top, and fourth leaf from the top, with all parameters being higher on the leaf surface than the underside. A 600 mL·hm-2 application rate of 20% tebuconazole·fluopyram SC demonstrated good efficacy against wheat powdery mildew, with nighttime operations yielding better results than daytime. When the spray volume was 45 L·hm-2 and droplet size was 50 μm, the efficacy reached its peak, with 57.73% control efficacy from daytime spraying and 72.10% from nighttime spraying 14 days after treatment. These findings provide references for the rational setting of agricultural drone operation parameters and scientific basis for effective control of wheat powdery mildew.
PDF
20
7
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
