Study on the application effect of flufenacet in rice fields

doi:10.16178/j.issn.0528-9017.20240812

Abstract

Abstract:

To clarify the application effect of flufenacet in rice fields, a large-scale field experiment was conducted to study its herbicidal effect and safety on rice seedlings in 2023. The result showed that when flufenacet was used for sealing treatment before and after rice transplanting, the seedling control effect and fresh weight control effect against grassy weeds (especially Echinochloa crus-galli and Leptochloa chinensis) could reach 92.0% to 98.0% at 15 days and 50 days after application, but the seedling control effect and fresh weight control effect against broadleaf weeds were only about 50.0%. Different application methods(spray or soil mix), and different management after medication (whether water is preserved after medication), the control effect is more than 90.0%, have little influence on flufenacet. After the application of flufenacet, rice grew normally and yield increased obviously than control group. It is recommended that in rice production, flufenacet could be flexibly used for sealing treatment based on actual conditions, with broadleaf grass sealing herbicides used in combination.

Key words: flufenacet, rice, weed control effect, safety

CLC Number:

S482.4

ZHANG Xin, ZHANG Chunhua, WANG Cheng, CHEN Guoqi. Study on the application effect of flufenacet in rice fields[J]. Journal of Zhejiang Agricultural Sciences, 2025, 66(9): 2208-2212.

Figures/Tables 4

References 12

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处理	施药时间及施药量
处理	移栽前(6月20日)	每hm²制剂用药量	移栽后(6月27日)	移栽后(7月2日)	每hm²制剂用药量
1	41%氟噻草胺	150 mL	—	—	—
2	41%氟噻草胺	300 mL	—	—	—
3	30%丙草胺+30%苄嘧磺隆	1 500 mL+300 g	41%氟噻草胺+30%苄嘧磺隆	—	150 mL+300 g
4	30%丙草胺+30%苄嘧磺隆	1 500 mL+300 g	—	41%氟噻草胺+40%氰氟草酯	150 mL+1 500 mL
5	30%丙草胺+30%苄嘧磺隆	1 500 mL+300 g	30%丙草胺+30%苄嘧磺隆	—	1 500 mL+300 g
6	41%氟噻草胺	150 mL	41%氟噻草胺	—	150 mL
7	30%丙草胺+30%苄嘧磺隆	1 500 mL+300 g	41%氟噻草胺	—	150 mL
8	30%丙草胺+30%苄嘧磺隆	1 500 mL+300 g	41%氟噻草胺+30%苄嘧磺隆	—	150 mL+300 g
9	CK	—	—	—	—

处理	施药时间及施药量
处理	移栽前(6月20日)	每hm²制剂用药量	移栽后(6月27日)	移栽后(7月2日)	每hm²制剂用药量
1	41%氟噻草胺	150 mL	—	—	—
2	41%氟噻草胺	300 mL	—	—	—
3	30%丙草胺+30%苄嘧磺隆	1 500 mL+300 g	41%氟噻草胺+30%苄嘧磺隆	—	150 mL+300 g
4	30%丙草胺+30%苄嘧磺隆	1 500 mL+300 g	—	41%氟噻草胺+40%氰氟草酯	150 mL+1 500 mL
5	30%丙草胺+30%苄嘧磺隆	1 500 mL+300 g	30%丙草胺+30%苄嘧磺隆	—	1 500 mL+300 g
6	41%氟噻草胺	150 mL	41%氟噻草胺	—	150 mL
7	30%丙草胺+30%苄嘧磺隆	1 500 mL+300 g	41%氟噻草胺	—	150 mL
8	30%丙草胺+30%苄嘧磺隆	1 500 mL+300 g	41%氟噻草胺+30%苄嘧磺隆	—	150 mL+300 g
9	CK	—	—	—	—

处理	药后30 d禾本科杂草的株防治效果/%		药后30 d阔叶杂草的株防治效果/%	药后50 d禾本科杂草的株防治效果/%		药后50 d阔叶杂草的株防治效果/%
处理	稗草	千金子	药后30 d阔叶杂草的株防治效果/%	稗草	千金子	药后50 d阔叶杂草的株防治效果/%
1	94.5	94.0	51.2	94.3	93.2	49.9
2	94.1	94.8	50.8	93.8	94.1	50.2
3	94.2	94.1	89.9	93.8	93.9	85.6
4	93.6	93.2	86.9	92.7	91.9	84.8
5	70.8	71.6	87.8	69.7	65.4	85.2
6	98.2	97.5	52.3	97.2	97.0	48.6
7	94.2	93.6	88.7	93.6	92.7	87.6
8	92.9	92.5	87.8	92.0	92.1	85.8
CK	—	—	—	—	—	—

处理	药后30 d禾本科杂草的株防治效果/%		药后30 d阔叶杂草的株防治效果/%	药后50 d禾本科杂草的株防治效果/%		药后50 d阔叶杂草的株防治效果/%
处理	稗草	千金子	药后30 d阔叶杂草的株防治效果/%	稗草	千金子	药后50 d阔叶杂草的株防治效果/%
1	94.5	94.0	51.2	94.3	93.2	49.9
2	94.1	94.8	50.8	93.8	94.1	50.2
3	94.2	94.1	89.9	93.8	93.9	85.6
4	93.6	93.2	86.9	92.7	91.9	84.8
5	70.8	71.6	87.8	69.7	65.4	85.2
6	98.2	97.5	52.3	97.2	97.0	48.6
7	94.2	93.6	88.7	93.6	92.7	87.6
8	92.9	92.5	87.8	92.0	92.1	85.8
CK	—	—	—	—	—	—

处理	禾本科杂草的鲜重防治效果/%		阔叶杂草的鲜重防治效果/%
处理	稗草	千金子	阔叶杂草的鲜重防治效果/%
1	96.3	96.5	47.3
2	95.2	94.8	49.2
3	95.8	96.8	88.6
4	95.0	95.3	86.8
5	74.7	74.4	87.2
6	98.0	97.6	51.4
7	95.9	95.3	88.8
8	94.3	95.1	87.3
CK	—	—	—