| Effects of insufficient drip irrigation distribution on growth, yield, and water use efficiency of cotton being picked with equal spacing machine |
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| DOI：10.7606/j.issn.1000-7601.2019.01.22 |
| Key Words: insufficient drip irrigation mechanical cotton growth characteristics yield water use efficiency |
| Author Name | Affiliation | | Abudukadier Kuerban | Research Center of Cotton Engineering, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | YANG Pei | Research Center of Cotton Engineering, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | LI Jian-wei | Research Center of Cotton Engineering, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | ZHANG Ju-song | Research Center of Cotton Engineering, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | GUO Ren-song | Institute of Economic Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang 830091, China | | LIN Tao | Institute of Economic Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang 830091, China | | CUI Jian-ping | Institute of Economic Crops, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang 830091, China |
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| Abstract: |
| In order toexplore the irrigation effect on cotton variety, ‘Xinluzhong54’ for optimal insufficient drip irrigation period and frequency of row cotton picker machine,we used a split design with treatments T1 (7 days， 1 times) and T2 (10 days， 1 times) and sub regions with 3 drip irrigation frequency, D6 (6 times), D7 (7 times), D8 (8 times). The results showed that under the same irrigation frequency, the growth were significantly delayed with increasing irrigation period whilenumber of leaves and effective branches,plant height, and leaf width increased with increasingirrigation period. Under the same irrigation period, number of leaves and length of internodeincreasedbutplant height and leaf width slightly decreased with increasing irrigation frequency. LAI, SPAD, and number of effectivebranches, number of buds and bolls increased first followed by decrease with increasing drip irrigation frequency. The growth characteristics were more optimal and single bell weight,lint yield, and water use efficiency were not significantly different. As the irrigation frequency increased, the treatment D7 resulted in the highest increase in cotton yield more than12.7% and 13.5% than D6 and D8, respectively. The water use efficiency in D7 also increased by 12.9% and 13.7% than that in D6 and D8, respectively. Therefore, in the Akesu area of southern Xinjiang, the optimal frequency of drip irrigation is 7 (Times) of the drip irrigation frequency and an irrigation period of 10 days, 1 times. |
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