| 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;甜高梁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. |
| 关键词: 调环酸钙-青鲜素复配剂 甜高粱 倒伏 株高 |
| DOI：10.11841/j.issn.1007-4333.2009.01.013 |
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| 基金项目:国家科技支撑计划，公益性行业(农业)科研专项经费项目? |
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| Effects of Ca-prohexadione and maleic-hydrazide mixture on lodging and plant height of sweet sorghum |
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| Abstract: |
| 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... |
| Key words: Ca-prohexadione and maleic-hydrazide mixture sweet sorghum lodging plant height |
