新型拌种剂对谷子生长及白发病发生的影响

doi:10.11686/cyxb2016449

草业学报 ›› 2017, Vol. 26 ›› Issue (9): 141-147.DOI: 10.11686/cyxb2016449

新型拌种剂对谷子生长及白发病发生的影响

张大众¹, 刘佳佳¹, 屈洋², 梁鸡保³, 张霞³, 韩雅利³, 冯佰利^1,*

1.西北农林科技大学农学院,陕西杨凌 712100;
2.宝鸡市农业科学院,陕西宝鸡721000;
3.神木县农业技术推广中心,陕西榆林719000

收稿日期:2016-11-29 修回日期:2017-02-14 出版日期:2017-09-20 发布日期:2017-09-20
通讯作者: *通信作者Corresponding author. E-mail: 7012766@163.com
作者简介:张大众(1992-),男,河南周口人,在读硕士。E-mail:1727697945@qq.com
基金资助:
“国家谷子糜子产业技术体系”(CARS-07-A9),“陕西省科技统筹创新工程计划”(2014KTZB02-03)和陕西省产业技术体系项目资助

Effect of seed coatings on foxtail millet seedling growth and incidence of downy mildew disease

ZHANG Da-Zhong¹, LIU Jia-Jia¹, QU Yang², LIANG Ji-Bao³, ZHANG Xia³, HAN Ya-Li³, FENG Bai-Li^1,*

1.College of Agronomy, Northwest A & F University, Yangling 712100, China;
2.Baoji Academy of Agricultural Sciences, Baoji 721000, China;
3.Shenmu County Agricultural Center, Yulin 719000, China

Received:2016-11-29 Revised:2017-02-14 Online:2017-09-20 Published:2017-09-20

摘要/Abstract

摘要： 白发病是影响谷子产量与品质的主要病害。为研究拌种剂对谷子生长及白发病发生的影响,本试验以感病谷子品种晋谷29和抗病品种汾选3号为材料,设置两个配方药剂(配方1:甲霜灵+代森锰锌+吡虫啉+磷酸二氢钾等,配方2:戊唑醇+吡虫啉+磷酸二氢钾等),分别以播种种子重量的0.1%,0.2%,0.3%药剂量进行干粉拌种,分析不同配方药剂在不同浓度下对谷子白发病发病率、农艺性状、功能叶叶面积、地上部干物质积累及产量的影响。结果表明,与对照相比,2个配方药剂拌种均能显著降低谷子白发病发病率且药剂浓度越高发病率越低。2个配方药剂拌种对谷子节数、穗粗无显著影响,随药剂浓度增加,茎粗、千粒重呈增大趋势,在0.1%浓度下株高、穗长均高于对照。各药剂处理下,顶三叶绿叶面积均小于对照,且随药剂浓度增加而减少。茎、叶、鞘、穗干重随药剂浓度增加呈降低趋势,0.1%浓度下均高于对照。2个配方药剂处理下产量均随药剂浓度增加而降低,药剂浓度为0.1%时感病品种晋谷29产量分别为4471.7和4420.6 kg/hm²,显著高于对照(4284.8 kg/hm²),其余各处理增产不明显。生产实践中,2个配方药剂拌种均能显著降低谷子白发病发病率,但总体上以配方2的0.1%浓度拌种效果更好。

Abstract: Downy mildew disease is the most serious threat to the quality and yield of foxtail millet. The aim of this study was to determine the effects of seed coatings on the growth of foxtail millet seedlings and the incidence of downy mildew disease. Seeds of the foxtail millet cultivars Jingu 29 (susceptible) and Fenxuan 3 (resistant) were coated with two different formulae (formula 1, F1: Metalaxyl+Mancozeb+Imidacloprid+potassium phosphate monobasic; formula 2, F2: Tebuconazol+Imidacloprid+potassium phosphate monobasic) at three concentrations (0.1%, 0.2%, 0.3% of seed weight, respectively). Then, the seedlings were monitored to determine downy mildew incidence, agronomic characters, functional leaf area, and shoot dry matter accumulation and yield. Both formulas significantly reduced the incidence of downy mildew disease with a dose-dependent effect. The two formulae did not affect node number and ear diameter, but they increased stem diameter and 1000-grain weight with a dose-dependent effect. The plant height and spike length of seedlings were higher in the 0.1% formula treatments than in the control (no seed coating). The functional leaf area decreased as the formula concentration increased. The dry weights of the stem, leaf, sheath, and panicle decreased with increasing formula concentration. The yields of Jingu 29 in the 0.1% formula 1 and formula 2 treatments were 4471.7 kg/ha and 4420.6 kg/ha, respectively, significantly higher than that in the control (4284.8 kg/ha). Both formulae significantly reduced the incidence of downy mildew, and formula 2 at the 0.1% concentration resulted in the best quality and yield of foxtail millet.

张大众, 刘佳佳, 屈洋, 梁鸡保, 张霞, 韩雅利, 冯佰利. 新型拌种剂对谷子生长及白发病发生的影响[J]. 草业学报, 2017, 26(9): 141-147.

ZHANG Da-Zhong, LIU Jia-Jia, QU Yang, LIANG Ji-Bao, ZHANG Xia, HAN Ya-Li, FENG Bai-Li. Effect of seed coatings on foxtail millet seedling growth and incidence of downy mildew disease[J]. Acta Prataculturae Sinica, 2017, 26(9): 141-147.

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新型拌种剂对谷子生长及白发病发生的影响

Effect of seed coatings on foxtail millet seedling growth and incidence of downy mildew disease

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