棉花几项经济性状在我国不同棉区表现的差异
文献类型: 中文期刊
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期刊名称:南京农业大学学报
ISSN: 1000-2030
年卷期: 1981 年 4 卷 01 期
页码: 49-55
摘要: 对若干个跨棉区多年的品种试验结果进行研究分析,发现棉花铃重、绒长、衣分及子指四项重要经济性状在西北内陆、长江流域和黄河流域三大棉区表现明显的差异;在西北内陆棉区铃重、绒长、衣分及子指都表现最高;长江流域棉区绒较长,衣分较高,但铃重轻;黄河流域棉区铃重较重,但绒长和衣分均较差。经分析看出:西北内陆棉区具有热量资源丰富,太阳辐射强,光照充足,昼夜温差大,并且可以人工灌溉等良好生态条件,十分有利于棉铃、种子和纤维的发育。因此可以考虑选择适宜区域(南疆一带)发展棉花生产;长江流域棉区具有温度较高,雨量充沛,棉田土壤肥力较好的条件,有利于纤维增长和衣分提高;黄河流域棉区的光照条件较好,昼夜温差较大,雨量适中,比较有利棉铃增大及种子的发育。鉴于这些性状在不同棉区表现的差异,在跨区引种时对此应予以充分考虑和估计;在确定育种目标和良种繁育选择标准时,不同棉区都应有相应的差别;在耕作栽培措施上应针对本棉区生态特点,扬长避短,发挥优势,使之达到高产优质的要求。
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