多效唑喷施浓度及时期对谷子性状及品质的影响  

Effects of Spraying Paclobutrazol with Different Concentrations and Time on Millet's Properties and Quality

作　　者：史关燕[1] 杨成元[1] 李会霞[2] 麻慧芳[1] 史根生[1] 

机构地区：[1]山西省农业科学院经济作物研究所,山西汾阳032200 [2]山西省农业科学院谷子研究所,山西长治046011

出　　处：《农学学报》2015年第8期31-35,共5页Journal of Agriculture

基　　金：山西省农科院重点项目"优质谷新品种高产配套栽培技术研究"(YZD1412);现代农业产业技术体系专项基金"国家谷子糜子产业技术体系汾阳综合试验站"(CARS-07-12.5-B5);"十二五"国家科技支撑计划项目"春谷晚熟区优质高产高效技术集成与示范"(2014BAD07B01-03)

摘　　要：为探明多效唑对谷子优质品种‘晋谷21号’的调控效果，提高‘晋谷21号’的抗逆性能，在3叶期、6叶期、9叶期3个时期，以0．2％、0．3％、0．4％、0．5％、0．6％5个浓度作了喷施多效唑试验。结果表明：喷施多效唑后，对‘晋谷21号’谷子下部节间长度（1-9节）有明显的抑制作用，并减少节间数量，使株高明显降低；喷多效唑的最佳时期为谷子出苗后9叶期；喷施多效唑的最佳浓度为0．4％～0．5％；喷施多效唑后不会影响‘晋谷2l号’的谷子产量和小米品质。To study the regulating effects of paclobutrazol on the properties and quality of millet ＇Jingu 21＇, and improve the variety＇ s stress resistance, the author sprayed paclobutrazol with different concentrations at different growing stages. The results showed that spraying paclobutrazol had obvious inhibiting effect on the internode length （1-9） of ＇Jingu 21 ＇, and reduced the number of internode, the plant height decreased significantly. The best period of spraying paclobutrazol was the 9 leaves stage after seedling. The optimal concentration of paclobutrazol was 0.4%-0.5%. The yield and quality of ＇Jingu 21＇ were not affected by the spraying of paclobutrazol.

关 键 词：多效唑 谷子 浓度 时期 

分 类 号：S515[农业科学—作物学]