| A study on effect of interactions of water management and nitrogen fertilizer on yield and water use efficiency in hybrid cotton during flowering-bolling stage in drip irrigation under mulch |
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| DOI：10.7606/j.issn.1000-7601.2010.03.04 |
| Key Words: hybrid cotton water and nitrogen interaction yield water use efficiency Northem Xinjiang |
| Author Name | Affiliation | | SUN Huijian | College of Agronomy, Shihezi University/ The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Group, Shihezi, Xinjiang 832000, China | | MA Fuyu | College of Agronomy, Shihezi University/ The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Group, Shihezi, Xinjiang 832000, China | | LIU Hao | College of Agronomy, Shihezi University/ The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Group, Shihezi, Xinjiang 832000, China | | CUI Jing | College of Agronomy, Shihezi University/ The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Group, Shihezi, Xinjiang 832000, China | | WU Yanqin | College of Agronomy, Shihezi University/ The Key Laboratory of Oasis Eco-agriculture, Xinjiang Production and Construction Group, Shihezi, Xinjiang 832000, China |
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| Abstract: |
| A field experiment, including seven water treatments and four nitrogen treatments, was conducted to e-valuate the effects of interaction of water management and nitrogen fertilizer on yield and water use efficiency during flow-
ering-bolling stage of hybrid cotton Shiza No. 2 in Shihezi in 2008. The results showed that cotton yield decreased signif-icantly under mild water stress and moderate water stress during flowering-bolling stage under the condition of no-nitrogen treatment but insignificantly compared with 5 d-18 mm irrigation in each level of N-application. With nitrogen increas-ing, the cotton yield decreased significantly in 3 d-30 mm water treatment. The cotton yield and water use efficiency in-creased significantly under 75% FC and 3d-18 mm and 5 d-30 mm irrigation conditions. Therefore, it could be con-cluded from the comprehensive effect of interactions of water and nitrogen of cotton yield and water use eficiency that 5 d-30 mm and 3 d-18 mm water treatments with 300 kg/ hm2 nitrogen rate were the optimal irrigation strategy and nitro-gen application for hybrid cotton in Northem Xingjiang. |
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