干旱地区农业研究Issue(5)：140-146,7.DOI:10.7606/j.issn.1000-7601.2015.05.26
甘肃河西棉花全生育期不同灌溉量对生长发育的影响及抗旱性评价
Effects of different irrigation volumes during the entire growth period on development of cotton in Hexi area of Gansu and evaluation of its drought resistance
摘要
Abstract
Eleven suitable cotton (Gossypium hiristurum) cultivars in Hexi area of Gansu ,Longmian No .1 ,Long-mian No .2 ,Longmian No .3 ,Jiumian No .11 ,Jiumian No .15 ,Jiumian No .17 ,Xinluzao No .39 ,Xinluzao No .48 , Shuofeng No .2 ,Gengye No .6 and Jinkeng No .108 were used to study the effects of different irrigation volumes including 4800 m3·hm-2(Ⅰ1) ,3600 m3·hm-2(Ⅰ2) ,2400 m3·hm-2(Ⅰ3) ,1200 m3·hm-2(Ⅰ4) during the entire growth period on growth and development of cotton under field conditions .The yield and irrigation water productivity of cotton were analyzed and the drought resistance of those cultivars were also evaluated by comprehensive evaluation by D method and resistance index method . The results showed that the plant height , number of fruiting branch , boll number per plant ,single boll weight ,fuzz length ,dry mass and seed cotton yield of most cotton cultivars became increased with mild water stress ,but went decreased significantly under severe water stress .The irrigation water productivity of all the culti-vars was highest at the I3 level .I3 level was the best irrigation condition for Shuofeng No .2 ,Xinluzao No .48 ,Jiumian No .11 ,Longmian No .1 ,Longmian No .3 ,and Longmian No .2 ,resulting in the highest yield and productivity .I2 level was the best irrigation practice for Jiumian No .15 ,Xinluzao No .39 ,Gengye No .6 ,Jinkeng No .108 ,and Jiumian No . 17 ,causing highest yield under sufficient irrigation conditions ,but the irrigation water productivity was low .Jiumian No . 17 and Longmian No .3 were highly resistant cultivars to drought ;Shuofeng No .2 and Gengye No .6 were moderate resis-tant cultivars;Xinluzao No .48 ,Longmian No .1 ,Longmian No .2 ,Jinkeng No .108 were weak drought resistant culti-vars;and Xinluzao No .39 ,Jiumian No .11 and Jiumian No .15 were sensitive to the drought .关键词
棉花/灌溉/生长发育/灌溉水生产力/抗旱性评价Key words
cotton/irrigation/growth and development/irrigation water productivity/drought evaluation分类
农业科技引用本文复制引用
冯克云,王宁,南宏宇..甘肃河西棉花全生育期不同灌溉量对生长发育的影响及抗旱性评价[J].干旱地区农业研究,2015,(5):140-146,7.基金项目
甘肃省科技重大专项（2013GS05926）；甘肃省农科院科技创新专项 （）
