不同化学打顶剂对北疆早熟陆地棉农艺及经济性状的影响  被引量:17

Effects of Different Chemical Topping Agents on Agronomic Characters and Yield of Early Maturing Upland Cotton (Gossypium hirsutum) in Northern Xinjiang Province

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作  者:叶春秀[1] 王刚[1] 李有忠[1] 王志军[1] 庄振刚[1] 谢宗铭[1] 

机构地区:[1]新疆农垦科学院生物技术所/作物种质创新与基因资源利用兵团重点实验室,新疆石河子832000

出  处:《西南农业学报》2017年第4期762-766,共5页Southwest China Journal of Agricultural Sciences

基  金:新疆农垦科学院"院科技引导计划项目"(41YYD201201);兵团技术转移项目(2013BD049)

摘  要:【目的】比较不同化学打顶剂对新疆北疆早熟棉农艺性状及经济性状的影响及化学打顶效果,筛选适合北疆早熟陆地棉化学打顶的试剂类型及处理方式。【方法】本研究以自选育的对植物生长调节剂敏感的陆地棉(代号为589)为试验材料,开展不同化学打顶剂(缩节胺、氟节胺、土优塔、打顶剂)与人工打顶的田间对比试验,比较不同类型植物生长调节剂、不同打顶方式对其农艺性状、产量性状、品质的影响。【结果】在株高性状上,不同打顶剂处理后都表现出高于人工打顶处理,株型更加紧凑;在果枝数、铃数性状上都表现出能够增加铃数,果枝数与人工打顶相当;在铃的空间分布上,不同打顶剂处理都表现出中下部铃及内围铃高于人工打顶;在铃重、籽棉重、皮棉重、衣分性状上,不同打顶剂处理与人工打顶相比存在着不同的差异,但差异都不显著;在绒长性状上,缩节胺、打顶剂处理与人工打顶处理有显著性差异,分别表现出减小和增加绒长,而其它打顶剂处理与人工打顶处理相比则没有显著性差异。【结论】目前已推广的几种化学打顶剂在改善北疆早熟陆地棉的农艺、经济性状等方面各自存在着利弊,在应用过程中需要进一步的探索、完善,以便于能够更好地起到打顶效果,实现规模化应用。[ Objective ] The present paper was conducted to screen the best de-topping chemical agents and application methods in early maturing upland cotton in Northern Xinjiang. [ Method ] Taken self-breeding cultivars 589 as tested materials, the field experiments of different cotton chemical and manual de-topping were carried out, the effects of different chemical topping agents on agronomic characters and yield of early maturing upland cotton ( Gossypium hirsutum) were studied. [ Result ] The plants de-topped by chemical agent were taller and narrower than that by hands, and the number of lower and inside boll and branch that treated by chemical agent were more than that by hands. There were not significant differences of boll weight, yield and lint percentage. The chemical de-topping agent contained mepiquat chloride and flu- metralin could reduced or increased fiber length in some degree, but other chemical de-topping method could not affected on fiber length. [ Conclusion] These chemical agents that extended in market had some advantages and disadvantages to promote the economic and other agricultural character of early maturity upland cotton in the northern of Xinjiang, and it need to further exploration in the application process in the future.

关 键 词:北疆 早熟陆地棉 化学打顶 试验 

分 类 号:S562[农业科学—作物学]

 

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