不同播期对特早熟棉辽3345生长发育及产量的影响  

Effects of Different Seeding Dates on the Growth Development,Yield and Fiber Quality of a Short-season Cotton Variety Liao 3345

作　　者：王巍[1] 吴晓东[1] 高艳平[1] 王子胜[1] WANG Wei(Liaoning Academy of Agricultural Sciences,Shenyang,Liaoning 110161)

机构地区：[1]辽宁省农业科学院,辽宁辽阳111000

出　　处：《园艺与种苗》2023年第5期73-75,共3页Horticulture & Seed

基　　金：国家棉花产业技术体系辽河综合试验站(CARS-15-31);国家重点研发计划——七大作物育种专项(SQ2018-YFD010081,2017YFD0101601,2016YFD0101412)。

摘　　要：[目的]探讨特早熟棉新品种(系)辽3345的综合生产潜力。[方法]2021年进行大田播期试验,设5月15日、5月21日、5月27日、6月2日、6月8日5个播期,研究不同播期对特早熟棉辽3345产量及品质性状的影响。[结果]特早熟棉辽3345随着播种时间的推迟,出苗时间缩短,生育进程先加快后减慢,全生育期株高随播期的推迟而降低;茎杆直径随播期的推迟而减小;马克隆值及纤维上半部平均长度均随着播期的推迟而下降;比强度及伸长率均随播期延迟而升高;籽棉产量、皮棉产量、衣分均随播期推迟而降低。特早熟棉辽3345的最适播期是5月15日左右。[结论]为早熟棉在辽宁省内的种植与推广提供理论依据。[Objective]The aim was to investigate the comprehensive production potential of a new cotton variety(line)Liao 3345.[Method]A field sowing date experiment was conducted in 2021.Five sowing dates were set on May 15th,May 21st,May 27th,June 2nd and June 8th to study the effects of different sowing dates on yield and quality characters of extra early maturing cotton Liao 3345.[Result]The results showed that with the delay of sowing time,the seedling emergence time was shortened.The growth process was first accelerated and then slowed down,and the plant height in the whole growth period decreased with the delay of sowing time.The diameter of stem decreased with the delay of sowing date.The average length of the upper half of the fiber and the maxron value decreased with the delay of the sowing date.The specific strength and elongation increased with the delay of sowing time.Seed cotton yield,lint yield and lint percentage all decreased with the delay of sowing date.The optimum sowing date of special early cotton Liao 3345 was around May 15th.[Conclusion]It provided theoretical basis for planting and popularizing early maturing cotton in Liaoning province.

关 键 词：特早熟 播期 辽3345 产量 品质 

分 类 号：S562[农业科学—作物学]