“矮密早膜”栽培模式下引进棉花品种农艺性状表现与评价

Expression and assessment of agronomic characters of different cotton varieties in Xinjiang

比较研究了“中棉23”、“中棉24”、“春矮早”、“豫棉17”、“抗虫棉1号”、“新高抗5号”、“抗虫棉试验种”、“中棉9409”、“中棉9409-”、“豫棉9-44”、“中棉12-53”、“秦远93089”和“晋远820”引进棉花品种在“矮密早膜”栽培模式下的田间产量、农艺性状及性状间关系。结果表明,在约15万株/hm^2密度下,株高控制在75cm左右产量最高;生育期长短与出苗天数关系最大,与开花～吐絮期天数关系次之,表明促早出苗和缩短开花～吐絮期天数是促早熟的关键。按对缩节胺(DPC)的反应可分为敏感型、中间型和迟钝型;运用灰色关联分析法综合评判出“豫9-44”、“秦远93089”、“中12-53”、“晋远820”、“豫棉17”为可优选品种。

The orientation plot trial for 13 cotton varieties was carried out under the “shorter, denser, earlier” cultivate model from 1997 to 1998 in Xinhe County of Xinjiang. The variety representation and the relation among the variety characters were studied. The results indicated that the cotton yield was highest when plant height was controlled at 75cm or so, while cotton plant density was 1.5×105 plants/hm2. The whole bearing period was most influenced by the emergence of seeding days and the time from blooming to boll opening, so the key phase to promote premature was to promote the seed to emergent and shorten the days from blooming to boll opening. 13 cotton varieties were divided into 3 chemistry control types, that is, sensitivity, middle and abuse. Finally “Yumian 9-44”,“Qinyuan 93089”,“Zhong mian 12-53”,“Jin yuan 820”,and “Yumian 17” are confirmed to be selectable varieties after the synthesized judgement through grey conjunction analysis.