多效唑施用量与时期对辣椒生长及产量的影响  

Effects of Paclobutrazol with Different Application Concentrations and Times on Growth and Yield of Hot Pepper

作　　者：涂祥敏[1] 赖卫[1] 杨红[1] 刘崇政[1] 詹永发[1] 余文中[1] 

机构地区：[1]贵州省辣椒研究所,贵州遵义563006

出　　处：《贵州农业科学》2009年第7期54-56,共3页Guizhou Agricultural Sciences

基　　金：贵州省农业动植物育种专项"贵州兼用型辣椒优育材料区试及配套栽培技术研究"[黔农育专字(2006)023]

摘　　要：为了探讨多效唑施用量和施用时期对辣椒生长及产量的影响，对遵椒2号进行了多效唑施用试验。结果表明，在4叶期和初花期各施用1次及初花期施用1次不同浓度多效唑，辣椒苗均表现叶色变深，株高降低，绿叶片增多，根茎增粗，苗壮；田间株高降低，第1节高变矮，根茎变粗，单株挂果数增加，单果变重，千粒重增大；增产2％～20．14％，施药与不施药对辣椒产量均有明显影响。但与施药次数差异不明显，处理浓度以250mg／kg效果最好；辣椒抗倒伏性强。施用浓度以250mg／kg效果最佳。在辣椒4叶期和初花期各施多效唑1次与初花期仅施多效唑1次相差不大。Zunjiao 2, a hot pepper variety, was applied by paclobutrazol with different concentrations and times to discuss the effects on its growth and yield. The results showed that applying paclobutrazol at four-leaf stage and first flower stage once could deepen leaf color, reduce plant height, improve lodging resistance, raise number of green leaf and stem diameter, increase pepper fruits per plant, single fruit weight and 1000-seed weight and its increase range of yield was from 2% to 20. 14%. There was significant difference in yield between treatments of applying paclobutrazol and without applying Paclobutrazol but there was no significant difference in yield between different application times. The best paclobutrazol concentration for good seedling quality and highest yield was 250 mg/kg in the test.

关 键 词：辣椒 多效唑 施用浓度 幼苗素质 经济性状 产量 

分 类 号：S641.3[农业科学—蔬菜学]