China Rice

China Rice ›› 2026, Vol. 32 ›› Issue (6): 118-122.DOI: 10.3969/j.issn.1006-8082.2026.06.017

• Varieties & Technology • Previous Articles     Next Articles

Mixed Application of Granular Herbicide and Fertilizer by Plant Drotectiond Drones and Its Cost-Efficiency Analysis in Rice Cultivation

CAI Chao1,#, HE Hu2,#, ZHANG Xiaoguo3, JIANG Haiping1, PAN Dandan1, ZHU Yibo1, SUN Jinqiu3, TANG Wei3,*(), YANG Yongjie3,*()   

  1. 1 Rudong County Agricultural Technology Extension Station, Rudong, Jiangsu 226400, China
    2 Rice Research Institute, Jiangxi Academy of Agricultural Science, Nanchang 330000, China
    3 China National Rice Research Institute/State Key Laboratory of Rice Biology and Breeding, Hangzhou 310006, China
  • Received:2026-04-03 Online:2026-11-20 Published:2026-11-11
  • About author:#Co-first author

植保无人机混施颗粒型除草剂和返青肥技术及水稻种植效益分析

蔡超1,#, 何虎2,#, 张晓果3, 姜海平1, 潘丹丹1, 朱一博1, 孙金秋3, 唐伟3,*(), 杨永杰3,*()   

  1. 1 如东县农业技术推广中心， 江苏 如东 226400
    2 江西省农业科学院 水稻研究所， 南昌 330000
    3 中国水稻研究所/水稻生物育种全国重点实验室， 杭州 310006
  • 作者简介:#共同第一作者
  • 基金资助:
    国家重点研发计划项目(2023YFD1401100);江西省水稻新品种选育及种植关键技术专项(JXNK 202301-04);浙江省新品种选育专项(2021C02063-3);中国农业科学院所级重大科技任务(CAAS-CNRRI-2025-01);中国农业科学院科技创新工程病虫草害防控技术创新团队

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Abstract:

The use of plant protection drones for herbicide spraying is a widely adopted, efficient weed management method among farmers. However, issues such as spray drift and poor deposition remain, making it important to develop safe, economical, and effective aerial application technologies. In this study, a 19% flucetosulfuron SC (34.2 g/hm2, active ingredient, same below) and a 300 g/L pretilachlor EC (300 g/hm2) were processed into 2.5 mm granular herbicides. These granules were evenly mixed with regreening fertilizer and applied using a plant protection drone at 9 days after rice transplanting. By measuring rice safety and weed control efficacy at different growth stages, and comparing the method with conventional drone-based herbicide spraying, the economic benefits of rice planting were evaluated. The results indicated that, with this technology, no visible phytotoxicity was observed in any tested rice varieties, and plant height was not inhibited. The method effectively controlled weeds such as barnyardgrass (Echinochloa crus-galli), Chinese sprangletop (Leptochloa chinensis), water amaranth (Amaranthus lividus), and duckweed (Monochoria vaginalis), achieving a total weed control efficacy of ≥91.4%. Compared with the local conventional drone spraying method, this technology reduced costs by at least CNY 48.0 per 667 m2 (a cost reduction of 54.5%) and increased rice yield by 13.3 kg per 667 m2. In conclusion, the simultaneous application of granular herbicides and regreening fertilizer using plant protection drones did not compromise herbicide efficacy, effectively solved problems of spray drift and poor deposition, and significantly improved the profitability of rice cultivation.

Key words: rice, herbicide granules, combined pre- and post-emergence weed control, technology integration, economic benefit

摘要：

利用植保无人机喷施除草剂是农民普遍采用的高效杂草治理方法，但该方法存在除草剂飘移、沉降性差等问题，研发安全、经济、高效的飞防技术具有重要意义。本研究将19%氟酮磺草胺悬浮剂34.2 g/hm2（有效剂量，下同）和300 g/L丙草胺乳油300 g/hm2加工成2.5 mm颗粒型除草剂，与返青肥混合均匀后，于水稻移栽后9 d搭载植保无人机撒施。通过测定不同时期水稻安全性和杂草防效，对比无人机常规喷施除草剂方法，测算水稻种植经济效益。结果表明，应用该技术后，各供试水稻品种无可见药害，株高未受抑制，能有效防治稗草、千金子、水苋菜和鸭舌草等杂草，总草防效达91.4%及以上。与当地无人机常规施药方法相比，该技术至少可节约成本48.0元/667 m2（降本54.5%），增加水稻产量13.3 kg/667 m2。总之，植保无人机混施颗粒型除草剂和返青肥技术在保证除草剂防效的基础上，有效解决了除草剂飘移和沉降问题，显著提升了水稻种植收益。

关键词: 水稻, 除草颗粒剂, 封杀兼顾, 技术集成, 经济效益

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