42%氟啶草酮复配33%二甲戊灵乳油对棉田杂草的防效、杀草谱及安全性评价

doi:10.6048/j.issn.1001-4330.2022.01.019

摘要/Abstract

摘要：

【目的】研究复配33%二甲戊灵乳油(200 mL/667m²)的42%氟啶草酮悬浮剂的最佳剂量,杂草的杀草谱以及对棉花安全评价。【方法】采用田间与室内结合方法,在不同浓度42%氟啶草酮悬浮剂复配33%二甲戊灵乳油(200 mL/667m²)条件下,分析其对棉田杂草防效、杀草谱以及对棉花出苗率、株高、产量等的影响。【结果】42%氟啶草酮悬浮剂对龙葵、反枝苋、灰藜、马齿苋有较高的杀草活性,EC₅₀分别为17.58、17.68、16.87和16.44 mL/667m²。药剂的最佳组合为42%氟啶草酮悬浮剂(35~40 mL/667m²)+33%二甲戊灵乳油(200 mL/667m²);42%氟啶草酮悬浮剂用量高于35 mL/667m²时对阔叶杂草的防效达到90%以上,且要优于禾本科杂草,该组合对苘麻和田旋花的防效低于59%;42%氟啶草酮悬浮剂复配33%二甲戊灵乳油(200 mL/667m²)对棉花的株高、鲜重、果枝数、单铃重、籽棉产量没有影响,出苗率在42%氟啶草酮悬浮剂(40~200) mL/667m²+33%二甲戊灵乳油的药剂下下降到90%以下。【结论】复配药剂的最佳浓度是42%氟啶草酮悬浮剂(35~40 mL/667m²)复配33%二甲戊灵乳油(200 mL/667m²);42%氟啶草酮悬浮剂单剂用量高于35 mL/667m²时对棉田主要阔叶杂草龙葵,反枝苋、灰藜、马齿苋具有良好的防效,有较高的杀草活性,防效达到90%以上;复配药剂中42%氟啶草酮悬浮剂浓度在40 mL/667m²以上时棉花出苗率下降到90%以下,但是对棉花产量,株高、鲜重没有影响。

关键词: 氟啶草酮; 二甲戊灵; 复配; 土壤处理; 防效; 杀草谱; 安全评价

Abstract:

【Objective】 To determine the best dosage of 42% fluridone suspension with 33% pendimethalin EC (200mL) through field trials and laboratory trials to kill weeds Spectrum and ensure the safety of cotton. 【Methods】 Effects of 42% fluoxetone suspension and 33% dimethylpentylin emulsifiable concentrate (200 mL/667m²) on weed control, herbicidal spectrum and seedling emergence rate, plant height and yield of cotton were studied by combining field with laboratory. 【Results】 42% flufenazone suspension had high herbicidal activity against Solanum nigrum L., Amaranthus retroflexus L., Chenopodium album L. and Portulaca oleracea L. with EC₅₀ of 17.58, 17.68, 16.87, 16.44 mL/667m ². In order to better control dicotyledonous weeds such as nightshade, it was recommended that the best combination of medicaments was 42% fluridone suspension (35-40 mL/667m²)+33% pendimethalin EC (200 mL/667m²); As for 42% fluazinon, when the dosage of ketone suspension was higher than 35 mL/667m², the control effect of broadleaf weeds was more than 90%, which produced better result on gramineous weeds. The control effect of this combination on Abutilon and Convolvulus was less than 59%; 42% compounding of 33% pendimethalin EC (200 mL/667m²) with fluazidone suspension had no effect on the plant height, fresh weight, fruit branch number, boll weight, and seed cotton yield, and the emergence rate was 42% fluoxazone suspension (40-200 mL/667m²)+33% Pendimethalin EC dropped below 90%.【Conclusion】 The best concentration of compound medicament is 42% fluorfenpyrone suspending agent (35-40 mL/667m²), compounding 33% pendimethalin EC (200 mL/667m²); As for 42% fluorfenpyrone suspending agent single, when the dosage is higher than 35 mL/667m², it has good control effect on the main broad-leaf weeds in cotton fields Solanum nigrum L. Amaranthus retroflexus L. Chenopodium album L. Portulaca oleracea L.all have high herbicidal activity, and the control effect can reach more than 90%; When the concentration of 42% flufenidone in the compound medicament is above 40 mL/667m ², the cotton seedling emergence rate drops to below 90%, but it has no effect on cotton yield, plant height and fresh weight.

Key words: flufenazone; pendimethalin; compound; soil treatment; prevention effect; herbicide spectrum; safety evaluation

中图分类号:

S451

苏攀龙, 李涛, 刘新元, 吴彩兰, 杨德松. 42%氟啶草酮复配33%二甲戊灵乳油对棉田杂草的防效、杀草谱及安全性评价[J]. 新疆农业科学, 2022, 59(1): 162-169.

SU Panlong, LI Tao, LIU Xinyuan, WU Cailan, YANG Desong. The Control Effect, Herbicidal Spectrum and Safety Evaluation of 42% Fluridone Compounded with 33% Pendimethalin EC on Weeds in Cotton Fields[J]. Xinjiang Agricultural Sciences, 2022, 59(1): 162-169.

图/表 8

参考文献 16

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处理 Trea tment	药剂名称 Drug name	用药量 Dosage of preparation (mL/667m²)
1	42%氟啶草酮 SC+33%二甲戊灵 EC	25+200
2	42%氟啶草酮 SC+33%二甲戊灵 EC	30+200
3	42%氟啶草酮 SC+33%二甲戊灵 EC	35+200
4	42%氟啶草酮 SC+33%二甲戊灵 EC	40+200
5	42%氟啶草酮 SC+33%二甲戊灵 EC	45+200
6	42%氟啶草酮 SC+33%二甲戊灵 EC	100+200
7	42%氟啶草酮 SC+33%二甲戊灵 EC	150+200
8	42%氟啶草酮 SC+33%二甲戊灵 EC	200+200
9	33%二甲戊灵 EC(对照药剂)	200
10	清水对照	/

处理 Trea tment	药剂名称 Drug name	用药量 Dosage of preparation (mL/667m²)
1	42%氟啶草酮 SC+33%二甲戊灵 EC	25+200
2	42%氟啶草酮 SC+33%二甲戊灵 EC	30+200
3	42%氟啶草酮 SC+33%二甲戊灵 EC	35+200
4	42%氟啶草酮 SC+33%二甲戊灵 EC	40+200
5	42%氟啶草酮 SC+33%二甲戊灵 EC	45+200
6	42%氟啶草酮 SC+33%二甲戊灵 EC	100+200
7	42%氟啶草酮 SC+33%二甲戊灵 EC	150+200
8	42%氟啶草酮 SC+33%二甲戊灵 EC	200+200
9	33%二甲戊灵 EC(对照药剂)	200
10	清水对照	/

处理 Treatment	药剂名称 Drug name	药剂浓度 Agent concentration (mL/667m²)	棉花出苗率 Cotton emergence rate(%)
1	42%氟啶草酮 SC+33%二甲戊灵 EC	25+200	91.6^a
2	42%氟啶草酮 SC+33%二甲戊灵 EC	30+200	90.3^a
3	42%氟啶草酮 SC+33%二甲戊灵 EC	35+200	90.2^a
4	42%氟啶草酮 SC+33%二甲戊灵 EC	40+200	88.3^b
5	42%氟啶草酮 SC+33%二甲戊灵 EC	45+200	86.4^b
6	42%氟啶草酮 SC+33%二甲戊灵 EC	100+200	84.6^b
7	42%氟啶草酮 SC+33%二甲戊灵 EC	150+200	84.5^b
8	42%氟啶草酮 SC+33%二甲戊灵 EC	200+200	83.4^b
9	33%二甲戊灵乳油(对照药剂)	200	91.5^a
10	清水对照	-	92.4^a

处理 Treatment	药剂名称 Drug name	药剂浓度 Agent concentration (mL/667m²)	棉花出苗率 Cotton emergence rate(%)
1	42%氟啶草酮 SC+33%二甲戊灵 EC	25+200	91.6^a
2	42%氟啶草酮 SC+33%二甲戊灵 EC	30+200	90.3^a
3	42%氟啶草酮 SC+33%二甲戊灵 EC	35+200	90.2^a
4	42%氟啶草酮 SC+33%二甲戊灵 EC	40+200	88.3^b
5	42%氟啶草酮 SC+33%二甲戊灵 EC	45+200	86.4^b
6	42%氟啶草酮 SC+33%二甲戊灵 EC	100+200	84.6^b
7	42%氟啶草酮 SC+33%二甲戊灵 EC	150+200	84.5^b
8	42%氟啶草酮 SC+33%二甲戊灵 EC	200+200	83.4^b
9	33%二甲戊灵乳油(对照药剂)	200	91.5^a
10	清水对照	-	92.4^a

处理 Treatment	药剂名称 Drug name	药剂浓度 Agent concentration (mL/667m²)	出苗后After emergence(%)
处理 Treatment	药剂名称 Drug name	药剂浓度 Agent concentration (mL/667m²)	7 d	15 d	30 d	45 d	60 d
1	42%氟啶草酮 SC +33%二甲戊灵 EC	25+200	73.8^b	76.8^b	78.8^b	79.7^b	88.8^a
2	42%氟啶草酮 SC +33%二甲戊灵 EC	30+200	81.6^b	90.6^a	90.3^a	92.6^a	94.6^a
3	42%氟啶草酮 SC +33%二甲戊灵 EC	35+200	84.8^b	91.8^a	91.4^a	93.8^a	94.7^a
4	42%氟啶草酮 SC +33%二甲戊灵 EC	40+200	88.1^a	92.7^a	93.6^a	93.7^a	94.1^a
5	42%氟啶草酮 SC +33%二甲戊灵 EC	45+200	90.8^a	92.5^a	93.8^a	94.8^a	95.0^a
6	42%氟啶草酮 SC +33%二甲戊灵 EC	100+200	94.6^a	96.6^a	94.6^a	95.6^a	95.2^a
7	42%氟啶草酮 SC +33%二甲戊灵 EC	150+200	95.2^a	96.5^a	95.2^a	96.3^a	98.8^a
8	42%氟啶草酮 SC +33%二甲戊灵 EC	200+200	97.6^a	98.6^a	98.7^a	99.5^a	98.6^a
9	33%二甲戊灵 EC	200	60.4^c	62.8^c	76.8^b	76.4^b	82.8^b
10	清水对照	-	-	-	-	-	-