宿生陆地棉经济性状的研究

在引进抗虫陆地棉品种的基础上,对5个品种二年生及其一年生栽培的主要经济性状进行了比较研究。结果显示,二年生棉平均皮棉产量1510.56kg·hm-2,比其一年生棉平均增产14.57%;二年生棉的棉纤维品质性状与其一年生棉的基本一致,部分性状优于其一年生棉。在供试品种中,中928 F1和湘杂棉3号的二年生棉皮棉产量分别为1845.42kg·hm-2,1689.63kg·hm-2,棉纤维品质优良,产量构成因素匹配好,可在冬季无霜或轻霜地区进行二年生栽培并应用于生产。

Study on economic characteristics of biennial and annual upland cotton

Based on the testing introduction of insect-resistant cultivars of upland cotton,a comparative test of the economic characteristics of biennial and its annual cultivating among 5 cultivars was carried out in Nanning ,Guangxi in 2005-2006. The results showed that the average lint yield of biennial cultivating was 1 510.56 kg·hm-2,14.57% higher than its annual cultivating. Cotton fibre quality characteristics of biennial cultivating is basic uniform with its annual cultivating,and some cotton fibre quality characteristics of biennial cultivating is excellenter than its annual cultivating. Among 5 tested cultivars,the lint yield of cultivars "Zhong 928 F1" and "Xiangza 3" is 1 845.42 kg·hm-2 and 1 689.63 kg·hm-2,their cotton fibre quality is fine and the components of lint yield matched well for each other. It indicates that the cultivar "Zhong 928 F1" and "Xiangza 3" may be suitable for biennially cultivating used for production in light frost or no frost area.