调环酸钙-青鲜素复配剂对甜高粱株高和倒伏的影响  

Effects of Ca-prohexadione and maleic-hydrazide mixture on lodging and plant height of sweet sorghum

作　　者：郭兴强[1,2] 于永静[1] 谢光辉[1,3] 王鑫[1] 艾买尔江[4] 杨少周 

机构地区：[1]中国农业大学农学与生物技术学院,北京100193 [2]青州市黑虎山水库管理局,山东青州262500 [3]中国农业大学生物质工程中心,北京100193 [4]新疆塔里木大学,新疆阿拉尔843300 [5]阳谷县农业局,山东阳谷252300

出　　处：《中国农业大学学报》2009年第1期73-76,共4页Journal of China Agricultural University

基　　金：国家"十一五"科技支撑计划课题资助(2006BAD07A04);公益性行业(农业)科研专项经费项目(nyhyzx07-011)

摘　　要：选用甜高粱品种原甜1号,在拔节后第20天叶面喷施一次调环酸钙-青鲜素复配剂,设2.6、5.2和10.4mg/m23个处理,研究了不同用量调环酸钙-青鲜素复配剂对甜高粱株高和倒伏的影响。试验结果表明,处理后14 d内复配剂处理植株高度和日生长量显著下降;甜高粱在开花前倒伏率显著降低,10.4 mg/m2处理倒伏率比对照降低了70.9%。各复配剂处理使植株后期生长出现反弹,灌浆期植株倒伏率增加,达到52%~65%,与对照无显著差异。根倒伏是对照区植株主要倒伏类型,茎倒伏是复配剂处理植株主要倒伏类型。Lodging is one of the major problem in Sweet sorghum(Sorghum bicolor(L.) Moench) production due to its high yield and plant height.Sweet sorghum variety Yuantian-1 was studied in this research,and it was treated with foliarly spray with the Ca-prohexadione and maleic-hydrazide mixture at rates of 2.6 mg/m2,5.2 mg/m2and 10.4 mg/m2 at Day-20 after jointing stage in order to investigate the effects of the mixture on plant height and lodging of sweet sorghum.The result showed that plant growth was decreased eff...

关 键 词：调环酸钙-青鲜素复配剂 甜高粱 倒伏 株高 

分 类 号：S566.5[农业科学—作物学]