摘要
【目的】明确氯氟吡啶酯对不同水稻品种安全性及产量的影响,为氯氟吡啶酯的推广及应用提供理论依据。【方法】以东北三省32个具有代表性的不同积温带水稻品种为研究对象,采用整株盆栽法研究氯氟吡啶酯对不同水稻品种的安全性及产量的影响。【结果】不同叶龄的水稻对氯氟吡啶酯敏感性不同,于水稻2~3叶期时施用氯氟吡啶酯,供试32个水稻品种中有22个水稻品种对氯氟吡啶酯表现敏感;于水稻3~4叶期时施用氯氟吡啶酯,敏感水稻品种数量仅为9个。总而言之,氯氟吡啶酯对3个敏感性品种产量的抑制作用显著高于对耐性品种的抑制作用。不同剂量的氯氟吡啶酯对松粳22、九稻60和沈稻5293个耐性品种的穗质量、穗粒数、实粒数和产量均未产生显著的抑制作用,但是对龙粳46、长白19和沈稻113个敏感水稻品种的穗粒数和实粒数均产生了显著的抑制作用,同时对穗质量和产量也产生了一定的抑制作用。【结论】3~4叶期施用氯氟吡啶酯对供试32个不同敏感性水稻品种的安全性显著地高于2~3叶期时施药;当氯氟吡啶酯的施用剂量(有效成分)大于等于22.5 g/hm2时,其对敏感性品种产量的抑制作用显著地高于耐性品种。
[Objective]This research clarified the effects of florpyrauxifen on the safety and the yield of different rice varieties,thus providing an important theoretical basis for the promotion and application of florpyrauxifen.[Method]32 rice varieties in northeastern China were selected as the research objects,the safety and the yield effects of florpyrauxifen on different rice varieties were investigated by whole-plant bioassay.[Results]Rice at different leaf ages had different sensitivities to florpyrauxifen,when florpyrauxifen was applied at 2-3 leaf stage,22 of 32 rice varieties were sensitive.When it applied at the 3-4 leaf stage of rice,the number of sensitive rice varieties was only 9.Overall,the inhibition effect of florpyrauxifen on the yield of the three sensitive varieties was significantly higher than that of the resistance varieties.Different doses of florpyrauxifen had no significant inhibition effect on panicle weight,grain number per panicle,filled grain number and yield of Songjing 22,Jiudao 60 and Shendao 529,however,it had significant inhibitory effect on grain number per panicle and yield of the three sensitive rice varieties of Longjing 46,Changbai 19 and Shendao 11.[Conclusion]TThe safety of florpyrauxifen applied during the 3-4 leaf stage was significantly higher than that at 2-3 leaf stage of 32 different sensitivity rice varieties,and when the dose of florpyrauxifen was greater than or equal to 22.5 g/hm2,its inhibition effect on the yield of sensitive varieties was significantly higher than that of the resistant varieties.
作者
刘亚光
李晓妍
吴绘鹏
朱金文
张苏新
张春鹏
LIU Yaguang;LI Xiaoyan;WU Huipeng;ZHU Jinwen;ZHANG Suxin;ZHANG Chunpeng(College of Agriculture,Northeast Agricultural University,Harbin 15003,China;College of Agriculture and Biotechnology,Zhejiang University,Hangzhou 310029,China)
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2022年第1期45-54,共10页
Acta Agriculturae Universitatis Jiangxiensis
基金
国家自然科学基金面上项目(32072433)。
