Effects of Several Stem and Leaf Herbicides on Yield and Quality in Spring Rapeseed of Brassica napus L.

doi:10.11924/j.issn.1000-6850.casb2025-0948

Abstract

Abstract:

To clarify the application effects of stem and leaf herbicides, including Clethodim, Aminopyralid·Clopyralid, Benazolin-ethyl, Quizalofop-P-ethyl, Clopyralid, Haloxyfop-P-methyl and Aminopyralid·Benazolin-ethyl·Clopyralid in the field of spring rapeseed of Brassica napus L., and provide a basis for safe and efficient chemical weed control, we compared and analyzed the weed control effect of the above-mentioned herbicides, their impact on the safety, yield composition, and grain quality in spring rapeseed of Brassica napus L.. The tested stem and leaf herbicides showed certain control effects on weeds in rapeseed fields. Among them, 24% Clopyralid·6% AminopyralidAS157.5g a.i./hm², 30% Clopyralid AS180 g a.i./hm², and 108 g/L Haloxyfop-P-methyl EC56.7g a.i./hm² achieved significant plant control effect and fresh grass control effect of 67.09%-88.26%. At the same time, the yield reached 2330.01 kg/hm², 2323.34 kg/hm², and 2300.01 kg/hm², which increased by 6.23%, 5.93%, and 4.86% respectively compared to the control with clean water. Other herbicides reduced production compared to the control, with a reduction range of 0.3%-16.26%. The impact of stem and leaf herbicides on quality is manifested as an increase in oleic acid content and a decrease in arachidonic acid content in the fatty acid components. The difference in oleic acid content reached a significant level (P=0.0353), while the difference in arachidonic acidcontent (P=0.0031) was extremely significant. In the production of spring rapeseed of Brassica napus L., it is recommended to use 24% Clopyralid·6% AminopyralidAS, 30% Clopyralid AS, and 108 g/L Haloxyfop-P-methyl EC for fields mixed with grasses and broad-leaved weeds,, which have the advantages of high efficiency, safety, and significant yield increase. The selection of herbicides should be based on grass phase, and should be applied at the appropriate time during the 3-6 leaf stage of weeds.

Key words: spring rapeseed of Brassica napus L., stem and leaf herbicides, weed control effectiveness, output, quality, safety

CLC Number:

S565.4

WANG Yi, LIU Tingting, JIN Fengwei, MA Xiaowei, DONG Yun. Effects of Several Stem and Leaf Herbicides on Yield and Quality in Spring Rapeseed of Brassica napus L.[J]. Chinese Agricultural Science Bulletin, 2026, 42(9): 190-196.

Figures/Tables 5

References 26

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序号	除草剂名称	剂型	主要防除对象
1	烯草酮(clethodim)	120 g/L EC	禾本科杂草
2	氨氯·二氯吡(Aminopyralid·Clopyralid)	30%AS (6%+24%)	阔叶杂草（如藜、猪殃殃）
3	草除灵(Benazolin-ethyl)	500 g/L EC	阔叶杂草（如藜、猪殃殃）
4	精喹禾灵(Quizalofop-P-ethyl)	10% EC	禾本科杂草
5	二氯吡啶酸(Clopyralid)	30% AS	阔叶杂草（如藜、猪殃殃）
6	高效氟吡甲禾灵(Haloxyfop-P-methyl)	108 g/L EC	禾本科杂草
7	氨氯酸·草除灵·二氯吡 (Aminopyralid·Benazolin-ethyl·Clopyralid)	35%SC(8%+25%+2%)	禾本科与阔叶杂草

序号	除草剂名称	剂型	主要防除对象
1	烯草酮(clethodim)	120 g/L EC	禾本科杂草
2	氨氯·二氯吡(Aminopyralid·Clopyralid)	30%AS (6%+24%)	阔叶杂草（如藜、猪殃殃）
3	草除灵(Benazolin-ethyl)	500 g/L EC	阔叶杂草（如藜、猪殃殃）
4	精喹禾灵(Quizalofop-P-ethyl)	10% EC	禾本科杂草
5	二氯吡啶酸(Clopyralid)	30% AS	阔叶杂草（如藜、猪殃殃）
6	高效氟吡甲禾灵(Haloxyfop-P-methyl)	108 g/L EC	禾本科杂草
7	氨氯酸·草除灵·二氯吡 (Aminopyralid·Benazolin-ethyl·Clopyralid)	35%SC(8%+25%+2%)	禾本科与阔叶杂草

序号	除草剂	剂量/(g.a.i/hm²)	株防效/%	鲜重防效/%
1	120 g/L烯草酮EC	72	39.83 fD	44.10 cC
2	24%二氯吡啶酸+6%氨氯吡啶酸AS	157.5	88.26aA	82.73aA
3	500 g/L草除灵SC	277.5	48.85 dC	66.08 bB
4	10%精喹禾灵EC	60	25.16 eC	57.29 bBC
5	30%二氯吡啶酸AS	180	78.62bA	79.27 aA
6	108 g/L高效氯吡甲禾灵EC	56.7	67.09 cB	69.85 abAB
7	8%氨氯酸+25%草除灵+2%二氯吡SC	62.5	43.19 deC	57.19 bBC
8	喷清水(CK)	0	159gE	1061.33dD

序号	除草剂	剂量/(g.a.i/hm²)	株防效/%	鲜重防效/%
1	120 g/L烯草酮EC	72	39.83 fD	44.10 cC
2	24%二氯吡啶酸+6%氨氯吡啶酸AS	157.5	88.26aA	82.73aA
3	500 g/L草除灵SC	277.5	48.85 dC	66.08 bB
4	10%精喹禾灵EC	60	25.16 eC	57.29 bBC
5	30%二氯吡啶酸AS	180	78.62bA	79.27 aA
6	108 g/L高效氯吡甲禾灵EC	56.7	67.09 cB	69.85 abAB
7	8%氨氯酸+25%草除灵+2%二氯吡SC	62.5	43.19 deC	57.19 bBC
8	喷清水(CK)	0	159gE	1061.33dD

序号	除草剂	小区产量/kg				折合产量/(kg/hm²)	比对照增产/%
序号	除草剂	Ⅰ	Ⅱ	Ⅲ	平均	折合产量/(kg/hm²)	比对照增产/%
1	120 g/L烯草酮EC	9.80	10.25	10.55	10.20	2040.01abAB	-6.99
2	24%二氯吡啶酸+6%氨氯吡啶酸AS	11.70	11.05	12.20	11.65	2330.01aA	6.23
3	500 g/L草除灵SC	9.85	8.25	9.45	9.18	1836.68bB	-16.26
4	10%精喹禾灵EC	10.10	11.4	11.3	10.93	2186.68abAB	-0.3
5	30%二氯吡啶酸AS	11.95	10.95	11.95	11.62	2323.34aA	5.93
6	108 g/L高效氯吡甲禾灵EC	11.30	12.2	11.00	11.50	2300.01aA	4.86
7	8%氨氯酸+25%草除灵+2%二氯吡SC	10.65	10.4	11.25	10.77	2153.34abAB	-1.82
8	喷清水(CK)	11.00	11.55	10.35	10.97	2193.34abAB	0
	平均	10.79	10.76	11.01	10.85	2170.43