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机构地区:[1]河南科技学院信息工程学院,河南新乡453003 [2]河南科技学院生命科技学院,河南新乡453003
出 处:《西北农林科技大学学报(自然科学版)》2008年第8期95-100,107,共7页Journal of Northwest A&F University(Natural Science Edition)
基 金:河南省重大科技攻关项目(032402001);河南省重点科技攻关项目(04220100)
摘 要:【目的】探讨黄河流域杂交春棉纤维品质的区域分布特征,为优质棉区域化种植和棉花生态育种提供依据。【方法】采集2005年黄河流域17个试点、19个杂交春棉品种的棉花样品,检测其棉纤维长度、比强度、麦克隆值、伸长率、反射率、黄度、整齐度、纺纱指数等8项指标,采用频数分析、因子分析、聚类分析等方法研究棉纤维品质的区域分布特征。【结果】黄河流域杂交棉纤维品质总体特征为纤维长度适中、比强度偏低、麦克隆值中等偏高,纺纱指数适纺60支纱的高强力棉仅占22.6%。8项品质指标可归纳为3个公因子,共解释总变异的77.85%。17个生态区划分为5个棉纤维品质生态亚区,Ⅰ亚区包括淮北、石家庄、西华、新乡、杨凌;Ⅱ亚区包括临西、安阳、天津;Ⅲ亚区包括沧州、郑州、昌邑、惠民、运城;Ⅳ亚区含邯郸、商丘;Ⅴ亚区含临清、宁津。Ⅱ亚区平均纤维长度(30.73 mm)、比强度(31.33 CN/tex)、纺纱指数(155.03)为最高,麦克隆值(4.33)为最低,综合品质表现最好,为优质棉区;Ⅰ亚区的纤维品质各项指标略逊于Ⅱ亚区,为次优质棉区;Ⅲ、Ⅴ两亚区棉纤维品质指标中等偏低,为中下品质棉区;Ⅳ亚区棉纤维品质最差,为低质棉区。【结论】Ⅱ亚区为优质棉区,Ⅰ亚区为次优质棉区,Ⅲ、Ⅴ亚区为下品质棉区,Ⅳ亚区为低质棉区。[Objective] The study was done to explore the district distribution traits of the fiber quality of cross-bred cotton in the Yellow River Zone to supply the basis on better cotton regional plantation and down the Yellow River zone were medium fiber length,a little bit lower strength,a bit higher medium micronaire value, high-strength cotton of spinning index fit to spin 60 yearn accounts for only 22.6 %;3 common factors,which explained in return 77.85% of the total varieties,could be extracted from 8 fiber quality indexes;17 different ecological points had been divided into five ecological sub-zones of the similar fiber quality. No. Ⅰ sub-zone includes Huaibei,Shijiazhuang,Xihua,Xinxiang and Yangling. No. Ⅱ sub-zone in-cludes Linxi,Anyang and Tianjin. No. Ⅲ sub-zone includes Cangzhou, Zhengzhou, Changyi, Huimin and Yuncheng. No. Ⅳ sub-zone contains Handan and Shangqiu. No. g sub-zone contains Linqing and Ningjin. In No. Ⅱ sub- zone, the average fiber length(30. 73mm),the strength(31. 33 CN/tex),spinning index (155.03) were the highest,micronaire value(4.33) was the lowest,the synthetic quality was the best, thus the best cotton zone;every index of fiber quality in No. Ⅰ ecological zone was only worse than No. Ⅱ , thus the less good cotton zone; and No. Ⅲ and g ecological zones were the middle and lower, the worst fiber quality was in No. Ⅳ ecological zone. [Conclusion] No. Ⅱ sub- zone was the best cotton zone;No. Ⅰ ecological zone was the less good cotton zone;No. Ⅲ and g ecological zones were the middle and lower,No. Ⅳ ecological zone was the worst cotton zone.
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