【摘要】 棉花纤维品质受环境因素的影响较大。不同棉区由于生态条件的差异,棉纤维品质的表现也有所不同。根据本研究结果,江苏省淮北地区各试点棉花的纤维品质,一般差于江淮之间和沿江各试点。淮北地区纤维品质较差的原因,主要与常年8～10月份棉铃充实期间气温较低有关。但这一地区4～6月份气温较高,日照较多;8～10月份降水较少,日照也较多,对棉花早发、结铃、吐絮较为有利。因此,我们认为江苏淮北地区是适于发展中支纱用棉的高产地区。而发展高支纱用棉,则以江淮之间和沿江较为有利。不同棉区都有其比较有利于棉铃发育、纤维品质较好的一段开花结铃期,以此可以作为棉花优质高产栽培调节生育期的依据。初步看出棉纤维强度主要受铃期内积温和夜间平均温度的共同影响。更多还原

【Abstract】 The fiber quality of upland cotton (Gossypium hirsutum L.)is largely affected by many environmental factors.There are considerable differences in fiber quality in different ecological areas.The results in this study indicated that the fiber quality produced in the regions north of the Huaihe River was inferior to that produced in the areas between the Yangtse River and the Huaihe River and in the regions along the Yangtse River in Jiangsu province.The poor fiber quality from north of the Huaihe River was mainly caused by low temperatures from August to October when the bolls were filling up.However,the temperature condition from April to June in this area was relatively suitable and the sunshine was sufficient.There were also less precipitation and sufficient sunshine within August and October.This kind of weather favored the early—stage growth,flowering,boll setting,and boll opening of cotton.According to this study,it is considered that the northern part to the Huaihe River in Jiangsu province is a high —yielding area suitable to grow cotton used for medium—count yarn,while the areas between the Yangtse River and the Huaihe River as well as the regions along the Yangtse River are more suitable to grow cotton used for superior quality textile fabrics.The data showed that each cotton growing area had its own period favorable to boll developing and fiber quality.It can be used as an important basis to regulate cotton growing periods for higher yields as well as better quality.There was evidence that fiber strength was mainly influenced by both cumula- tive temperatures during the boll growing period and average night temperatures.更多还原