摘要
本研究以银香38为试验对象,设置处理1(50%丙草胺EC 1500 mL/hm^(2))、处理2(50%丙草胺EC 1800mL/hm^(2))、处理3(41%氟噻草胺SC 150 mL/hm^(2))和处理4(41%氟噻草胺SC 180 mL/hm^(2)),共4个处理,以清水为空白对照,分别在室内盆栽、模拟田间小气候、大田3种环境条件下,比较不同处理下杂草稻的防效及水稻生长安全性。结果表明,盆栽试验中,药后14 d各处理对杂草稻均表现出高防效,其中处理3和处理4的平均株防效明显高于处理1和处理2,且差异具有统计学意义(P<0.05);模拟田间小气候试验中,药后14 d处理1、2较盆栽试验防效大幅下降,而处理3、4较盆栽试验防效下降幅度较小,仍保持较高防效,且明显优于处理1、2防效,与处理1、2的差异具有统计学意义(P<0.05);大田防治试验中,药后14和21 d,处理3、4与处理1、2差异均具有统计学意义(P<0.05)。在水稻生长安全性方面,处理1、2、3、4对水稻叶龄、茎蘖数等生长指标无明显影响,但处理3、4的株高增量与对照差异具有统计学意义(P<0.05),说明50%丙草胺EC对水稻生长安全性较好,而41%氟噻草胺SC在试验剂量下对秧苗株高的正常增长存在影响。综合表明,丙草胺和氟噻草胺均可用于稻田杂草稻的防除,氟噻草胺可作为高效药剂防治杂草稻。
The Yinxiang 38 was used as the test subject in this study,four treatments were set up:treatment 1(50%pretilachlor EC at 1500 mL/m2),treatment 2(50%pretilachlor EC at 1800 mL/m2),treatment 3(41%flufenacet SC at 150 mL/m2),and treatment 4(41%flufenacet SC at 180 mL/m2),with clear water as the blank control.Under 3 environmental conditions such as indoor pot,simulated field microclimate,and field,the efficacy and safety of different treatments on rice growth were compared.The results showed that in the pot experiment,all treatments demonstrated high control effects against weed rice 14 d after application.In the simulated field microclimate experiment,the control effects of treatments 1 and 2 was significantly lower than that of the pot experiment 14 d after application.However,the decline in the control effect of treatments 3 and 4 was relatively small compared to the pot test,they still maintained a relatively high control effects and were significantly better than those of treatments 1 and 2.The differences compared with treatments 1 and 2 were statistically significant(P<0.05).In the field control experiment,there were statistically significant differences between treatments 3 and 4 and treatments 1 and 2 at 14 and 21 d after medication(P<0.05).In terms of the safety of rice growth,treament 1,2,3 and 4 had no significant effect on growth indicators such as leaf age and stem tiller number of rice.However,the plant height increments of treatments 3 and 4 were significantly different from those in the blank area(P<0.05),indicating that 50%pretilachlor EC had better safety for rice and could reduce the damage to rice in production applications,while 41%flufenacet SC had an impact on the normal growth of seedling height at the experimental dose.Comprehensive analysis showed that both pretilachlor and flufenacet could be used to control weeds in rice fields,and flufenacet could be used as an efficient agent to control weeds in rice fields.
作者
黎伟裕
叶高潮
梅亚林
王聪
LI Weiyu;YE Gaochao;MEI Yalin;WANG Cong(Shanghai Guangming Changjiang Modern Agriculture Co.,Ltd.,Shanghai 202178,China)
出处
《安徽农学通报》
2025年第20期91-94,共4页
Anhui Agricultural Science Bulletin
基金
光明农业发展(集团)有限公司杂草稻综合防控技术研究与推广(41000354)。
关键词
杂草稻
除草剂
土壤封闭
防效
生产应用价值
Oryza sativa f.spontanea
herbicide
soil confinement
control efficacy
production application value
作者简介
黎伟裕(1982-),男,江西新余人,农艺师,从事作物生产及植保技术应用研究。
