稀植留营养枝对杂交棉豫杂35通风透光特性及产量品质的影响  

Effects of low density and retaining monopodiums on ventilation and penetrating light,and yield and quality of hybrid cotton Yuza 35

作　　者：马宗斌[1] 李伶俐[1] 房卫平[2] 谢德意[2] 张东林[3] 

机构地区：[1]河南农业大学农学院,河南郑州450002 [2]河南省农业科学院棉花油料作物研究所,河南郑州450002 [3]河南省开封县棉花办公室,河南开封475100

出　　处：《浙江农业学报》2006年第2期94-98,共5页Acta Agriculturae Zhejiangensis

基　　金：河南省杰出人才创新基金(0321001600);河南省科技攻关项目(0424020023)

摘　　要：在高产栽培条件下，研究了稀植、留营养枝对杂交棉豫杂35通风透光特性和产量品质的影响。结果表明：1．8万株／hm^2并留3个强势营养枝，2．1万株／hm^2并留2个强势营养枝和2．4万株／hm^2并留2个强势营养枝比1．5万株／hm^2并留3个强势营养枝的棉花，群体叶面积动态及中下部透光合理，干物质积累多，群体开花量大，单位面积结铃数显著增加，皮棉产量增加9．5％～10．5％，达到显著水平。而在1．8～2．4万株／hm^2密度范围内，棉花产量差异不显著。说明在高产条件下，杂交棉豫杂35密度弹性大，密度可由目前的（2．25～3．00）万株／hm^2降低到1．80万株／hm^2。Effects of low density and retaining monopodium on ventilation and penetrating light, and yield and quality of hybrid cotton Yuza 35 was studied under high yield cultivation conditions. The results showed that comparing with the treatment of population of 1.5 × 10^4 plants/hm^2 and retaining 3 monopodiums/plant, the treatments of population of 1.8 × 10^4 plants/hm^2 and retaining 3 monopodiums/plant,2.1 × 10^4 plants hm^2 and retaining 2 monopodiums/plant, and 2.4 × 10^4 plants/hm^2 and retaining 2 monopodiums/plant had more reasonable LAI and good penetrating light under the middle-lower part of the plants, accumulated more dry matter had more flowers and bolls, and increased lint yield by 9.5% - 10.5% （ P 〈0.05）.However, no significant differences was found between the yields of the treatments with density 1.8 × 10^4 - 2.4 × 10^4 plants/hm^2. It indicated that the density of hybrid cotton Yuza 35 had broad flexibility under high yield cultivation conditions, and its plating density could be decreased from （3.00 - 2.25） × 10^4 plants/hm^2 to 1.80 × 10^4 plants/hm^2.

关 键 词：稀植 营养枝 通风透光 棉花 产量 纤维品质 

分 类 号：S562[农业科学—作物学]