不同类型除草剂的田间防效及其对裸燕麦带壳率和产量的影响

doi:10.11686/cyxb2015105

草业学报 ›› 2016, Vol. 25 ›› Issue (1): 171-178.DOI: 10.11686/cyxb2015105

不同类型除草剂的田间防效及其对裸燕麦带壳率和产量的影响

宋旭东, 赵桂琴^*, 柴继宽

甘肃农业大学草业学院,草业生态系统教育部重点实验室,中-美草地畜牧业可持续发展研究中心,甘肃兰州 730070

收稿日期:2015-02-25 出版日期:2016-01-20 发布日期:2016-01-20
通讯作者: *通信作者Corresponding author. E-mail:zhaogq@gsau.edu.cn
作者简介:宋旭东(1990-),男,甘肃秦安人,硕士。E-mail:1052118992@qq.com
基金资助:
现代农业产业技术体系(CARS-8-C1)和农业部牧草种质资源保护项目(2013014)资助

Effects of different herbicides on weed control, grain yield and hull rate in naked oats

SONG Xu-Dong, ZHAO Gui-Qin^*, CHAI Ji-Kuan

College of Pratacultural Science, Gansu Agricultural University;
Key Laboratory of Grassland Ecology System, Ministry of Education, Sino-U.S. Centers for Grazing Land Ecosystem Sustainability, Lanzhou 730070, China

Received:2015-02-25 Online:2016-01-20 Published:2016-01-20

摘要/Abstract

摘要： 为了筛选燕麦田安全高效的除草剂种类及其剂量,在甘肃中部地区开展了田间试验,选取72% 2,4-D丁酯、20%氯氟吡氧乙酸、48%麦草畏、50%草除灵、50%二氯喹啉酸、40%二甲·溴苯腈(2甲4氯钠含量20%、溴苯腈含量20%)、55%苯·唑·2甲钠(苯磺隆含量2.6%、2甲4氯钠含量50%、唑草酮含量2.4%)7种激素型除草剂和1种非激素型除草剂75%苯磺隆,每种除草剂设低、中、高3个浓度,研究不同处理对裸燕麦田杂草的控制及对裸燕麦带壳率和产量的影响。结果表明,72% 2,4-D丁酯药害严重,导致裸燕麦带壳率显著增加,不宜在裸燕麦田施用。除草剂对杂草的防效随浓度的增加而提高,燕麦种子产量也随除草剂及其浓度的增加而变化。结合安全性、杂草防效和种子产量,以40%二甲·溴苯腈1350 mL/hm²、55%苯·唑·2甲钠750 g/hm²在裸燕麦田的综合效应最佳,不仅防效高,而且持效期长;燕麦种子产量较对照分别增加21.26%和18.41%。

Abstract: In order to select safe and effective herbicides and to determine optimal application rates for oat production, a field trial was conducted in central Gansu. Seven hormonal herbicides were trialed:72% 2, 4-D Butyl ester, 20% Fluroxypyr, 48% Dicamba, 50% Benazolin, 50% Quinclorac, 40% Bromoxynil octanoate plus MCPA-sodium (MCPA-sodium content by 20% plus Bromoxynil content by 20%) and 55% Tribenuron-methyl plus Carfentrazone plus MCPA-sodium (Tribenuron-methyl content by 2.6% plus MCPA-sodium content by 50% plus Carfentrazone content by 2.4%) and one non-hormonal herbicide 75% Tribenuron-methyl. The herbicides were tested at low, medium and high dosages with naked oats to determine their effects on weed control, grain yield and hull rate. The 72% 2, 4-D Butyl ester was harmful to oat production and caused significant increases in hull rates, indicating that it should not be used with this crop. The effectiveness of weed control increased with increases in herbicide dosage. Grain yield also fluctuated with dosage levels. Considering safety, weed control and grain yield, 40% Bromoxynil octanoate plus MCPA-sodium at 1350 mL/hm², 55% Tribenuron-methyl plus carfentrazone plus MCPA-sodium at 750 g/hm² were the best options, showing higher and longer weed control and improved grain yield (21.26% and 18.41% compared with the control, respectively).

宋旭东, 赵桂琴, 柴继宽. 不同类型除草剂的田间防效及其对裸燕麦带壳率和产量的影响[J]. 草业学报, 2016, 25(1): 171-178.

SONG Xu-Dong, ZHAO Gui-Qin, CHAI Ji-Kuan. Effects of different herbicides on weed control, grain yield and hull rate in naked oats[J]. Acta Prataculturae Sinica, 2016, 25(1): 171-178.

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不同类型除草剂的田间防效及其对裸燕麦带壳率和产量的影响

Effects of different herbicides on weed control, grain yield and hull rate in naked oats

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