A New Herbicide Flurochloridone in Potato Field on Qinghai Plateau: Application and Safety

doi:10.11924/j.issn.1000-6850.casb2020-0246

Abstract

Abstract:

To explore the safety application technology of the new herbicide flurochloridone in potato field on Qinghai Plateau, the potato variety ‘Qingshu 9’ was used as material, pesticide registration field efficacy trials and potato quality analysis were conducted, and the best dosage, application mode and quality index data of flurochloridone were measured. The results show that the effective dose of flurochloridone in potato field is recommended to be 350-650 g a.i./hm ², the best application time is after sowing and before seedling, usually at 15-20 d after sowing. The best application mode is to seal the soil. The comprehensive control effect of Flurochloridone on monocotyledonous and dicotyledonous weeds could be more than 80%, and the yield could be increased by more than 10.15%, and it had no effect on the important parameters of the content of starch, Vc and reducing sugar and the dry matter quality. Therefore, Flurochloridone can be popularized as the main herbicide in potato fields on Qinghai Plateau and potato growing areas in northwest China.

Key words: Flurochloridone, potato, control efficacy, field application, quality

CLC Number:

S482.4

Li Wei. A New Herbicide Flurochloridone in Potato Field on Qinghai Plateau: Application and Safety[J]. Chinese Agricultural Science Bulletin, 2021, 37(9): 149-154.

Figures/Tables 5

References 25

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处理	药剂/方式	剂量/(g a.i./hm²)
1	25%氟咯草酮EC/混土	500.00
2	25%氟咯草酮EC/封闭	500.00
3	25%氟咯草酮EC/茎叶	500.00
4	48%氟乐灵EC/混土	1440.00
5	33%施田补EC/混土	990.00
6	人工除草	0.00

处理	药剂/方式	剂量/(g a.i./hm²)
1	25%氟咯草酮EC/混土	500.00
2	25%氟咯草酮EC/封闭	500.00
3	25%氟咯草酮EC/茎叶	500.00
4	48%氟乐灵EC/混土	1440.00
5	33%施田补EC/混土	990.00
6	人工除草	0.00

处理	剂量/ (g a.i./hm²)	苗期	后期		马铃薯
处理	剂量/ (g a.i./hm²)	株防效/%	株防效/%	鲜重效/%	产量/(kg/hm²)	增产率/%
25%氟咯草酮EC	200.00	68.15±5.73cC	65.06±3.01eE	63.01±4.42eE	40794.00	7.69±2.02dD
25%氟咯草酮EC	350.00	78.25±1.18cC	66.26±1.08eE	70.68±2.04dD	41728.50	10.15±2.55cC
25%氟咯草酮EC	500.00	86.07±2.69bB	85.15±0.98cC	87.11±4.23cC	44016.75	16.19±2.19bB
25%氟咯草酮EC	650.00	90.42±0.23bB	88.01±1.67cC	88.66±1.04cC	45692.25	20.62±1.08bB
25%氟咯草酮EC	800.00	92.43±0.69bB	90.55±1.87bB	92.67±3.29bB	42471.75	12.12±2.33bcBC
25%氟咯草酮EC	900.00	95.51±3.34bB	92.05±2.11bB	94.76±3.99bB	41856.75	10.49±1.73cC
48%氟乐灵EC 33%施田补EC	1440.00	58.34±3.18dD	57.44±3.19fF	62.18±4.22eE	40399.50	6.64±0.76eE
48%氟乐灵EC 33%施田补EC	990.00	57.51±2.31dD	57.29±5.65fF	60.67±7.16eE	40288.50	6.35±1.82eE
人工除草	0	92.40±1.52bB	72.43±4.24dD	70.16dD	41034.75	8.32±0.32dD
空白对照	0	0.00aA	0.00aA	0.00aA	37881.75	0.00 aA

处理	剂量/ (g a.i./hm²)	苗期	后期		马铃薯
处理	剂量/ (g a.i./hm²)	株防效/%	株防效/%	鲜重效/%	产量/(kg/hm²)	增产率/%
25%氟咯草酮EC	200.00	68.15±5.73cC	65.06±3.01eE	63.01±4.42eE	40794.00	7.69±2.02dD
25%氟咯草酮EC	350.00	78.25±1.18cC	66.26±1.08eE	70.68±2.04dD	41728.50	10.15±2.55cC
25%氟咯草酮EC	500.00	86.07±2.69bB	85.15±0.98cC	87.11±4.23cC	44016.75	16.19±2.19bB
25%氟咯草酮EC	650.00	90.42±0.23bB	88.01±1.67cC	88.66±1.04cC	45692.25	20.62±1.08bB
25%氟咯草酮EC	800.00	92.43±0.69bB	90.55±1.87bB	92.67±3.29bB	42471.75	12.12±2.33bcBC
25%氟咯草酮EC	900.00	95.51±3.34bB	92.05±2.11bB	94.76±3.99bB	41856.75	10.49±1.73cC
48%氟乐灵EC 33%施田补EC	1440.00	58.34±3.18dD	57.44±3.19fF	62.18±4.22eE	40399.50	6.64±0.76eE
48%氟乐灵EC 33%施田补EC	990.00	57.51±2.31dD	57.29±5.65fF	60.67±7.16eE	40288.50	6.35±1.82eE
人工除草	0	92.40±1.52bB	72.43±4.24dD	70.16dD	41034.75	8.32±0.32dD
空白对照	0	0.00aA	0.00aA	0.00aA	37881.75	0.00 aA

处理	剂量/ (g a.i./hm²)	野燕麦株防效/%	藜株防效/%	密花香薷株防效/%	野燕麦鲜重防效/%		密花香薷鲜重防效/%
25%氟咯草酮EC	200.00	27.34±2.35d	61.05±4.38e	55.49±5.29e	32.97±6.55e	64.88±5.15e	67.57±4.45d
25%氟咯草酮EC	350.00	31.66±3.18d	68.22±2.19d	65.33±5.81d	33.46±8.21e	75.48±3.24d	73.93±3.86cd
25%氟咯草酮EC	500.00	37.97±4.87d	86.33±4.15c	75.68±6.19c	39.04±3.27de	82.61±1.90c	85.46±3.03c
25%氟咯草酮EC	650.00	41.13±1.17d	90.99±5.09b	79.32±3.70c	42.00±2.01de	90.38±1.4b	88.14±2.88b
25%氟咯草酮EC	800.00	55.48±3.36c	94.68±0.97b	85.46±2.44b	46.35±0.73d	92.64±0.90b	89.66±2.64b
25%氟咯草酮EC	900.00	57.95±1.65c	96.13±1.08b	89.79±1.09b	48.67±0.51d	98.53±0.56b	90.31±1.23b
48%氟乐灵EC 33%施田补EC	1440.00	61.58±5.69c	65.91±3.82e 59.32±3.61e	49.23±4.58f 45.06±3.95g	62.97±4.24c 65.43±7.19c	61.58±6.36e 62.73±5.98e	45.65±7.68e 43.25±8.91e
48%氟乐灵EC 33%施田补EC	990.00	62.73±4.65c	65.91±3.82e 59.32±3.61e	49.23±4.58f 45.06±3.95g	62.97±4.24c 65.43±7.19c	61.58±6.36e 62.73±5.98e	45.65±7.68e 43.25±8.91e
人工除草	0	72.14±3.65b	71.08±4.09d	73.67±6.69c	76.42±6.64b	80.55±8.23c	69.28±3.55d
空白对照	0	0.00aA	0.00aA	0.00aA	0.00aA	0.00aA	0.00aA