摘要
为筛选适宜黑龙江省大豆生产上防除效果较好的大豆除草剂,设置了8个药剂处理,调查施药后20和30 d杂草株数防效,施药后45 d杂草鲜重防效,探讨83%丙炔氟·嗪草酮·乙草胺乳油对大豆田一年生杂草的防除效果,以及药剂处理对大豆产量的影响。结果表明,83%丙炔氟·嗪草酮·乙草胺乳油对大豆田一年生杂草的防除效果较好,在中等剂量有效成分1743 g·hm^(-2)处理下,对本氏蓼、反枝苋和稗草的鲜重防效分别高达97.80%、98.64%和98.13%,持效期可达45 d,并对大豆安全。本研究的复配药剂应用适期为大豆播后苗前,采用土壤处理,一次性施药。
In order to screen the srybean field hericides with better cotrol effect suitable for soybean production in Helongjiang Province,in this experiment,eight chemical treatments were set up to investigate the control effect of weed number 20 and 30 days after application,and the control effect of weed fresh weight 45 days after application.The control effect of 83%propargyl fluoride·acetochlor·acetochlor EC on annual weeds in soybean field and the effect of chemical treatment on yield were discussed.The results showed that 83%flumioxazin·metribuzin·acetochlor EC had a good control effect on annual weeds in soybean field.Under medium and high dose treatment,the control effect of fresh weight of Polygonum bungeanum Turcz.,Amaranthus retroflexus L.and Echinochloa crusgalli(L.)Beauv,was 97.80%,98.64%and 98.13%,respectively.And the lasting time was about 45 days,and it was safe for soybean.It is suggested that the suitable application period of compound agents in this study is after soybean sowing and before seedling,soil treatment and one-time application.
作者
宋伟丰
SONG Wei-feng(Institute of Plant Protection,Heilongjiang Academy of Agricultural Sciences,Harbin 150086,China)
出处
《黑龙江农业科学》
2022年第9期69-72,共4页
Heilongjiang Agricultural Sciences
基金
黑龙江省农业科学院“农业科技创新跨越工程”专项-农作物有害生物5G预警及统防统治(HNK2019 CX14)。
关键词
大豆田
一年生杂草
株数防效
鲜重防效
soybean field
annual weeds
plant control effect
fresh weight control effect
