| 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 |
| Key Words: foxtail millet irrigation treatment agronomic traits yield growth stages |
| Author Name | Affiliation | | DONG Kong-jun | Crop Research Institute, Gansu Province Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | HE Ji-hong | Crop Research Institute, Gansu Province Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | REN Rui-yu | Crop Research Institute, Gansu Province Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | LIU Tian-peng | Crop Research Institute, Gansu Province Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | FENG Ke-yun | Crop Research Institute, Gansu Province Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | NAN Hong-yu | Crop Research Institute, Gansu Province Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | ZHANG Lei | Crop Research Institute, Gansu Province Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | YANG Tian-yu | Crop Research Institute, Gansu Province Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China |
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| Abstract: |
| 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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