摘要
为研究新型杀虫剂、杀菌剂噻虫·咯·霜灵拌种对高粱种子萌发的影响,以不同品质的金糯粱1号高粱种子为试验材料,分别以0、300、600、900、1200、1500 mL噻虫·咯·霜灵/100 kg种子进行拌种,测定在培养皿培养、花盆培养、田间直播条件下不同用量噻虫·咯·霜灵拌种高粱种子的发芽率或出苗率以及培养皿条件下种子的霉变率。结果表明:噻虫·咯·霜灵拌种对优质高粱种子发芽率或出苗率均无显著影响,但可显著降低劣质高粱种子霉变率,一定程度上提高劣质高粱种子田间直播的出苗率。不同用量噻虫·咯·霜灵拌种处理的优质高粱种子平均发芽率或出苗率表现为培养皿培养>花盆培养>田间直播,劣质种子平均发芽率或出苗率表现为花盆培养>田间直播>培养皿培养,低用量处理培养皿条件下劣质高粱种子霉变抑制了部分种子的发芽。噻虫·咯·霜灵最佳使用量为600 mL/100 kg种子。
The current study was undertaken to determine the effects of thiamethoxam·fludioxonil·metalaxyl FS,a new insecticide and fungicide,on the germination of sorghum seeds.The seeds of the sorghum variety Jinnuo No.1 with different qualities were used as experimental materials,which were dressed with thiamethoxam·fludioxonil·metalaxyl at the application rates of 0,300,600,900,1200,or 1500 mL per 100 kg seeds.Under the treatments with thiamethoxam·fludioxonil·metalaxyl at the different application rates,seeds were cultured in petri dishes for measuring their germination rate and mildewing rate,and cultivated in flowerpots and in the field under the direct seeding mode for measuring their seedling emergence rate.The results showed that thiamethoxam·fludioxonil·metalaxyl had no significant effect on either the germination rate or the seedling emergence rate of high-quality sorghum seeds,but it significantly reduced the mildewing rate of low-quality sorghum seeds and also improved their seedling emergence rate to some extent under direct-seeding mode in the field.For high-quality sorghum seeds applied with thiamethoxam·fludioxonil·metalaxyl at the different rates,their average germination rate or seedling emergence rate varied with seed culture conditions in the following order:petri dish culture>flowerpot culture>field direct-seeding;however,the counterparts of low-quality seeds varied with seed culture conditions in a different order as follows:flowerpot culture>field direct-seeding>petri dish culture.On the other hand,the mildewing of sorghum seeds with inferior quality inhibited their germination under low application rates of thiamethoxam·fludioxonil·metalaxyl.The optimal application rate of thiamethoxam·fludioxonil·metalaxyl was 600 mL/100 kg seeds.
作者
龙文靖
刘天朋
倪先林
万年鑫
杨斌
向箭宇
李元
赵甘霖
丁国祥
汪小楷
LONG Wen-jing;LIU Tian-peng;NI Xian-lin;WAN Nian-xin;YANG Bin;XIANG Jian-yu;LI Yuan;ZHAO Gan-lin;DING Guo-xiang;WANG Xiao-kai(Rice and Sorghum Institute,Sichuan Academy of Agricultural Sciences,Sichuan Branch of National Sorghum Improvement Center,Deyang 618000,China;Management Committee of Luxian Modern Agricultural Park,Luzhou 646100,China;Xuanhan Research Institute of Agricultural Sciences,Dazhou 636150,China)
出处
《大麦与谷类科学》
2020年第6期39-42,共4页
Barley and Cereal Sciences
基金
达州市科技计划项目酿酒高粱新品种选育及栽培技术集成(19ZDYF0050)
四川省“十三五”玉米育种攻关项目(2016NYZ-029)
四川特色经作创新团队高粱新品种选育及配套栽培技术研究与推广。
关键词
种衣剂
高粱
噻虫·咯·霜灵
种子萌发
Seed dressing
Sorghum
Thiamethoxam·fludioxonil·metalaxyl
Seed germination
