摘要
为探讨停水时间对膜下滴灌棉花纤维品质的影响,对南疆地区主栽陆地棉品种‘中棉所49号’和‘新陆中28号’在不同停水时间调节下,棉花纤维品质指标的变化特征进行研究。结果表明:随停水时间向后推移‘中棉所49号’和‘新陆中28号’皮棉产量均显著提高,同时不同停水时间对棉花纤维品质也产生较大影响。停水时间偏早,‘中棉所49号’纤维长度、比强度、马克隆值均升高,为0.3mm、0.5cN/tex、0.3,‘新陆中28号’棉花纤维长度、比强度降低,降幅为0.3mm、0.1cN/tex,马克隆值升高0.2;停水时间偏晚,‘新陆中28号’棉花纤维长度、比强度、马克隆值均降低,降幅为0.5mm、0.3cN/tex、0.1;‘中棉所49号’同样纤维长度、比强度和马克隆值均呈下降趋势,但与正常停水棉花纤维品质相比差异未达到显著水平。因此,生产上适当延迟停水时间至8月15日—9月5日之间,有利于棉花经济效益的提高。
In order to explore the effects of different timings of terminating irrigation on the fiber quality of mulched and drip-irrigated cotton,this study analyses the variations in fiber quality indicators with different timings of cutting off water supply of two main cotton varieties in south Xinjiang：‘Zhongmiansuo49’and‘ Xinluzhong28’.The results showed that an increase in cotton lint yield was obtained by deferring terminating irrigation,the two cultivars behaved the same.That terminating irrigation either too early or too late was negatively influence cotton fiber quality.Terminating irrigation too early resulted in a in fiber length,specific strength and Macmm values o‘fZhongmiansuo49’were 0.3 mm,0.5 cN/tex and 0.3,respectively,and decrease of‘Xinluzhong28’in fiber length and specific strength were 0.3 mm and 0.1 cN/tex,respectively,Macmm values increased 0.2.In contrast,terminating irrigation too late led to a general reduction of‘Xinluzhong28’in fiber length,specific strength and Macmm value were 0.5 mm,0.3 cN/tex,0.1,and‘Zhongmiansuo49’behaved the same,in fiber length,specific strength and Macmm values were decreased.However in the latter case,the differences were not significant.Thus in production practice,appropriately deferring irrigation termination was from August 15 to September 5 will boost economic result of cotton production.
出处
《中国农学通报》
CSCD
北大核心
2011年第30期147-151,共5页
Chinese Agricultural Science Bulletin
基金
"十一五"国家科技支撑"棉花持续优质高效生产技术体系研究与示范"(2006BADB02-1)
"十一五"自治区重大专项"棉花高产优质高效栽培技术研究"(200731133-1)
农业部公益性行业项目"棉花简化种植节本增效生产技术研究与应用"(nyzx07-005:3-5-20)
农业部公益性行业项目"南疆地区粮食
棉花和果树间作技术模式研究"(201003043-07)
科技部富民强县项目"优质长绒棉技术体系构建及产业化"
关键词
纤维品质
滴灌
停水时间
棉花
fiber quality
drip irrigation
timings of terminating irrigation
cotton
