| 董孔军,何继红,任瑞玉,刘天鹏,冯克云,南宏宇,张磊,杨天育.不同生育阶段灌水处理对谷子生长发育的调控效应[J].干旱地区农业研究,2016,34(5):35~39 |
| 不同生育阶段灌水处理对谷子生长发育的调控效应 |
| Effects of irrigation on growth and development of foxtail millet at different growth stages |
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| DOI：10.7606/j.issn.1000-7601.2016.05.05 |
| 中文关键词: 谷子 灌水处理 农艺性状 产量 |
| 英文关键词:foxtail millet irrigation treatment agronomic traits yield growth stages |
| 基金项目:国家科技支撑计划项目（2014BAD07B01，2013BAD01B05-9） |
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| 中文摘要: |
| 在敦煌年降雨量39 mm条件下，研究了拔节期、抽穗期、灌浆期不同生育阶段灌水处理对谷子农艺性状及产量的影响。试验结果表明：不同生育阶段灌水对谷子主要农艺性状及产量都有较大影响，与全生育期不灌水相比，拔节期、抽穗期、灌浆期各灌1次水处理谷子生育期缩短5.4 d，株高增高51.1 cm，穗长增长1.2 cm，株穗重、株粒重和株草重分别增重14.2、12.3 g和3.1 g，产量增加225.85 kg·666.7m-2；全生育期不灌水处理谷子产量最低，仅105.78 kg·666.7m-2，抽穗期和灌浆期共灌2次水，拔节期、抽穗期、灌浆期共灌3次水和抽穗期仅灌1次水各处理，产量分别达339.91、331.64 kg·666.7m-2和288.31 kg·666.7m-2，灌2次水产量最高。 表明抽穗期灌水对谷子产量形成影响最为显著。灰色关联度分析表明，单株粒重、单株穗重和主穗长与产量相关性最为密切。 |
| 英文摘要: |
| In Dunhuang city where annual rainfall is about 39mm, effects of irrigation at different growth stages on main morphological characteristics and yield of foxtail millet were studied. Additionally, gray correlative degree analyses were employed to study the correlations between main morphological characteristics and yield. The result showed that treatment with irrigation three times at jointing, heading and filling stages shortened the growth period by 5.4 days, increased plant height, length of panicle, panicle weight per plant, seed weight per plant, straw weight per plant, and yield per 667m2 by 51.1 cm, 1.2 cm, 14.2, 12.3, 3.1 g, 225.85 kg than no irrigation, respectively. Yield by no irrigation treatment during the growth period was only 105.78 kg·666.7m-2. However, treatments with irrigation three times at jointing, heading and filling stages, irrigation two times at heading and filling stages and only irrigation once at heading stage caused high yields of 339.91, 331.6 kg·666.7m-2 and 288.31 kg·666.7m-2, respectively. The results demonstrated that irrigation at the heading stage of foxtail millet is most effective. There were close correlations between seed weight per plant, panicle weight per plant, length of panicle and yield by gray correlative degree analysis. |
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