华北农学报2023，Vol.38Issue(z1)：112-118,7.DOI:10.7668/hbnxb.20194050
植物生长调节剂对谷子生长发育的调控效应
Effects of Plant Growth Regulators on Growth and Development of Foxtail Millet
摘要
Abstract
In order to screen chemical control agents that can effectively reduce millet plant height and im-prove its lodging resistance,as well as the optimal spraying period,and explore the effects of different chemical con-trol agents on millet growth,development,and yield,four chemical control agents(paclobutrazol,Menthylamine,cynanchon,and uniconazole)were sprayed on Nenxuan 17 during the seedling and jointing stages.The dry matter accumulation,SPAD,net photosynthetic rate,stem characteristics and yield components of each treatment plant were measured during the filling and mature stages.The results showed that spraying uniconazole,chlorpyrifos,chlorpyrifos,and paclobutrazol during the seedling and jointing stages of foxtail millet could dwarf plants to varying degrees,increase stem diameter,improve lodging resistance,and achieve yield increase.Among them,the plant height and internode length of foxtail millet decreased by 6.76%and 25.43%respectively compared to CK during the seedling stage.Spraying chloramphenicol had the most significant effect on increasing stem diameter during the seedling stage,which was 22.89%higher than CK.The foxtail millet had the best lodging resistance under the spra-ying of foxtail millet,and the spraying of foxtail millet had the most significant effect on increasing yield during the seedling stage,which was 17.51%higher than CK;all four regulators could significantly increase the SPAD value and net photosynthetic rate of millet leaves.Spraying paclobutrazol at the seedling stage had the best effect on im-proving the SPAD value and net photosynthetic rate,with an increase of 35.29%and 30.37%respectively com-pared to CK;spraying chemical control agents had no significant effect on the accumulation of aboveground dry mat-ter in millet plants compared to CK.Overall,spraying paclobutrazol during the seedling stage had the best effect and could be applied as a suitable chemical control and lodging resistance measure for high-yield cultivation of millet.关键词
谷子/植物生长调节剂/生长发育/调控效应Key words
Foxtail millet/Plant growth regulator/Growth and development/Regulatory effect分类
农业科技引用本文复制引用
闫锋,董扬,赵富阳,侯晓敏,李清泉,王立达,胡继芳,范国权,刘凯..植物生长调节剂对谷子生长发育的调控效应[J].华北农学报,2023,38(z1):112-118,7.基金项目
国家谷子高粱产业技术体系建设项目(CARS-06) （CARS-06）
齐齐哈尔市科技计划重点攻关项目(ZDGG-2022011) （ZDGG-2022011）
齐齐哈尔市科技计划重点攻关项目(ZDGG-202209) （ZDGG-202209）
