花铃期缺水对棉株成铃空间分布规律的影响  

Effects of Water Deficiency on Spatial Distribution of Cotton Bolls in Canpoy During Flowering Fruiting Period

作　　者：许玉璋[1] 许萱[1] 翁琴[1] 

机构地区：[1]西北农业大学农学系,新疆昌吉农校

出　　处：《干旱地区农业研究》1994年第3期49-55,共7页Agricultural Research in the Arid Areas

基　　金：国家自然科学基金

摘　　要：１９８６～１９８９年在盆栽条件下研究了花铃期土壤水分对棉铃空间分布的影响，试验结果表明：棉花花铃期缺水，单株成铃率降低，成铃空间分布不均；棉铃性状表现为铃重减轻，单铃种子数减少，不孕籽数增多，衣指、籽指降低，纤维长度变短，衣分率降低。在空间分布上一般是随果枝部位增高和果节外移而降低。花铃期不同阶段缺水，对棉铃各性状空间分布的影响趋势基本一臻，影响的程度是全旱＞中旱＞前旱。The effects of soil water deficit on the distrbution of cotton bolls werestudied under the potted cultivation from the years of 1986～ 1989. The results indicatedthat soil water deficit during the flowerin fruiting period reduced the rate of mature bolls ,boll weight,seed number per bol,lint index,seed index and lint percentage. Also,soil water deficit shortened the cotton fibre length and made boll distribution more ir-regular in the cotton canpo,as well as increased the number of unfertilized ovules perboll. The mature bolls mainly centered on the lower fruiting shoots longitudinally andthe nodes of the fruiting shoots near the stalk of cotton horizontally. In the differentstages of the flowering fruiting period the effects of soil water deficit on the spacialdistribution had thesame tendency. The effect degrees were the complete drought>mid drought>prior drought.

关 键 词：棉花 土壤水分 成铃空间 产量 

分 类 号：S562[农业科学—作物学]