| Effects of drip irrigation frequencies on root growth and yield\|related traits of spring rapeseed in Xinjiang |
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| DOI：10.7606/j.issn.1000-7601.2018.03.04 |
| Key Words: spring rapeseed (brassica napus L.) drip irrigation frequencies root growth yield\|related traits |
| Author Name | Affiliation | | LI Qiang | College of Agronomy, China Agriculture University, Beijing 100091, China
Institute of Industrial Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang 830091, China | | JIA Dong-hai | Institute of Industrial Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang 830091, China | | GU Yuan-guo | Institute of Industrial Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang 830091, China | | WANG Juan | Institute of Industrial Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang 830091, China | | SU Jun-hong | Xinjiang Yumin County Agricultural Technology Extension Station, Yumin, Xinjiang 834800, China | | WANG Zhi-min | College of Agronomy, China Agriculture University, Beijing 100091, China |
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| Abstract: |
| In order to explore the root growth and yield-related traits of spring rapeseed under different drip irrigation frequencie in arid region in Xinjiang. Xinyou No.17 was chosen for experimental material. There were four frequencies of drip irrigation (W1, W2, W3 and W4) for field experiments. The results showed that the growth stage reduced 2~5 days since frequencies of drip irrigation from W4 (seedling, squaring, post-flowering 10 d and final flowering stage) reduced to W1 (no drip irrigation). Furthermore, the effect of different frequencies of drip irrigation on the moisture content ranked W4>W3>W2>W1. With the increased frequencies of drip irrigation from W1 to W4, the effect on moisture content of soil was more significant in 0~60 cm than those in 60~100 cm level. The dry weight of roots, root activity and dry matter accumulation had a growing trend in 0~40 cm level. Moreover, the yields of spring rapeseed reduced from 3026.5 kg·hm-2 to 1219.1 kg·hm-2 with the decreasd frequencies of drip irrigation frequencie from W4 to W1, while the main agronomic traits also declined with significant differences. In addition, there was no obvious yield difference between W3’s 2749.1 kg·hm-2 and W4. Taken together, it was little effect on yield-related traits and yields of spring rapeseed treating with drip irrigations at squaring stage and 10 d post-flowering. This could be a viable effective model for water-saving and high\|yield spring rapeseed production. |
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