不同艾氟迪(AFD)处理对棉花产量形成和纤维品质的影响  

Effects of Different AFD Treatments on Yield Formation and Fiber Quality of Cotton

作　　者：刘帅 吴洁 李亚兵[1] 韩迎春[1] 董合林[1] 李鹏程[1] 郑苍松 孙淼 Liu Shuai;Wu Jie;Li Yabing;Han Yingchun;Dong Helin;Li Pengcheng;Zheng Cangsong;Sun Miao(IInstitute of Cotton Research of Chinese Academy of Agricultural Sciences/State Key Laboratory of Cotton Biology,Anyang,Henan 455000,China)

机构地区：[1]中国农业科学院棉花研究所/棉花生物学国家重点实验室,河南安阳455000

出　　处：《棉花学报》2018年第4期344-352,共9页Cotton Science

基　　金：国家科技支撑计划(2014BAD03B02-2);国家自然科学基金(31371561)

摘　　要：【目的】以新型植物生长调节剂艾氟迪(AFD)为研究对象,探索其对棉花产量形成以及纤维品质的影响,为科学施用AFD提供依据。【方法】设6个不同AFD处理水平,分析不同处理对棉株株高、铃数、铃重、籽棉产量和纤维品质等的影响。【结果】棉株株高与AFD处理水平呈负相关关系;AFD在抑制棉铃脱落率和提高棉铃吐絮率方面效果明显;AFD在处理水平为1 350~1 800 m L·hm-2时,单株铃数和铃重较对照有显著提高,同时获得的籽棉产量较高;不同水平的AFD处理对棉纤维的断裂比强度、马克隆值、断裂伸长率没有显著影响,但高水平的AFD处理对纤维长度和长度整齐度指数有一定的抑制作用。【结论】适宜的AFD处理水平对棉花增产效果显著,且对纤维品质影响较小。探寻AFD对棉花的影响机制,对生产应用具有一定的指导意义。[Objective]We examined the effects of spraying AFD(Agent of flower bud differentiation),a new plant growth regulator,on cotton yield formation and fiber quality.This study was designed to provide a scientific basis for chemical regulation.[Method]Six treatments of different AFD concentrations were used for this experiment.Cotton plant height,boll number,boll weight,seed cotton yield,and fiber quality were assessed to clarify the effects of chemical regulation on cotton at different concentrations.[Result]The results showed that cotton plant height was associated with AFD concentration while AFD was effective in inhibiting the cotton boll shedding ratio and significantly increasing the boll opening ratio.Furthermore,the boll number per plant and boll weight were significantly higher in plants sprayed with AFD at concentrations of 1 350-1 800 mL·hm-2 than in the control group and higher seed cotton yields were obtained.Different concentrations of AFD had no significant effect on cotton breaking strength,micronaire value,and breaking elongation.However,the highest AFD concentration had certain inhibiting effects on fiber length and uniformity index.[Conclusion]The use of chemical control via a suitable concentration of AFD had a significant effect on increasing cotton yield and little effect on fiber quality.The study of the mechanism by which AFD affects cotton traits is of great significance for cotton production.

关 键 词：棉花 艾氟迪 成铃率 产量 纤维品质 

分 类 号：S562.01[农业科学—作物学]