文献类型： 外文期刊

作者： Yuan Wan-ling ¹ ; Xu Bo ² ; Ran Gang-chao ² ; Chen Hui-ping ¹ ; Zhao Peng-yue ¹ ; Huang Qi-liang ¹ ;

作者机构： 1.Chinese Acad Agr Sci, Inst Plant Protect, Beijing 100193, Peoples R China

2.Henan Haonianjing Biol Dev Co, Henan Prov Engn & Technol Res Ctr Controlled Pest, Zhengzhou 450040, Peoples R China

关键词： controlled-release granule; imidacloprid; dose distribution; control effect; wheat

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：2.848； 五年影响因子：2.979 ）

ISSN： 2095-3119

年卷期： 2020 年 19 卷 12 期

页码：

收录情况： SCI

摘要： During winter wheat production, aphids need to be controlled with pesticides for the entire growth period. Controlled-release technology has been regarded as an alternative method for the improvement of pesticide efficiency. This study investigated two types of imidacloprid controlled-release granule (CR-GR): 2% imidacloprid CR-GR and 0.2% imidacloprid pesticide-fertilizer controlled-release granule (PF-CR-GR) when wheat was sown in winter. The release performance, utilization rate, terminal residues in edible parts, control effect on aphids, and achieved winter wheat yield were evaluated for both laboratory experiments and field application. Imidacloprid PF-CR-GR released more quickly in aqueous medium than CRGR because of its good water solubility. After CR-GR treatments, the concentrations in wheat roots and soil were similar throughout the entire sampling period, and the concentrations in shoots were about 10-20% of those in roots. Imidacloprid was better absorbed when CR-GR was used as root treatment, compared with foliar treatment. Field application showed that imidacloprid CR-GR and PF-CR-GR controlled aphids throughout the entire growth period of winter wheat and improved the wheat yield. These findings identified application of imidacloprid CR-GR and PF-CR-GR on winter wheat as an effective way to enhance the pesticide utilization rate and ensure adequate yield. This paper provides a theoretical basis for the scientific use of pesticides and guides scientific pesticide application.