摘要
为探索提高滨海盐碱地杂交棉产量和品质一致性的适宜密度和收获方式,2017年采用大田试验,以杂交棉冀杂2号为供试材料,设置3×104株/hm^2(M1)、6×10~4株/hm^2(M2)、9×10~4株/hm^2(M3)、12×10~4株/hm^2(M4)和15×10~4株株/hm^2(M5) 5个密度处理,在9月10日、9月20日、9月30日、10月10日、10月20日、10月30日6个日期进行收获,研究了密度对杂交棉产量和品质形成的影响。结果表明,冀杂2号在M2和M3密度下的皮棉产量均超过1 600 kg/hm^2,9月收获的籽棉产量比例超过90%,纤维的马克隆值4.98～5.17,上半部平均长度28.9～30.1 mm,长度整齐度指数84.0%～84.8%,断裂比强度28.8～29.6 cN/tex,尤以M2处理9月的收获日期间差异不明显。综合产量和品质指标,冀杂2号较宜采用6×10~4株/hm^2的种植密度,宜在9月底和10月底各进行一次收获。
The effects of density on the yield and quality consistency of the hybrid cotton were studied in coastal saline-alkali area of China.The density and harvest method for improving the yield and quality consistency was determined in this research.The experiment was conducted in 2017 and the hybrid cotton Jiza 2 was used in this experiment.Variety was tested with five density levels which were 3×10 4 plant/ha(M1),6×10 4 plant/ha(M2),9×10 4 plant/ha(M3),12×10 4 plant/ha(M4)and 15×10 4 plant/ha(M5),and six harvest time points which were September 10,September 20,September 30,October 10,October 20,and October 30.Results showed that under M2 and M3 treatments the lint yield was above 1 600 kg/ha,and the yield was mainly formed in September,which account for more than 90%.Fiber quality of the yield harvested in September under treatment M2 and M3 was as follows:fiber micronaire varied from 4.98 to 5.17,the upper half mean length varied from 28.9 mm to 30.1 mm,the uniformity index varied from 84.0%to 84.8%,and breaking tenacity varied from 28.8 cN/tex to 29.6 cN/tex.The differences among the three harvest time points under M2 and M3 treatments were not significant,especially for M2 treatment.Combining yield and quality index,the results showed that the optimum planting density of hybrid cotton Jiza 2 was 6×10 4 plant/ha,and it was suitable to harvest at the end of September and at the end of October.
作者
冯国艺
张谦
祁虹
王树林
杜海英
雷晓鹏
王燕
梁青龙
林永增
FENG Guoyi;ZHANG Qian;QI Hong;WANG Shulin;DU Haiying;LEI Xiaopeng;WANG Yan;LIANG Qinglong;LIN Yongzeng(Cotton Research Institute,Hebei Academy of Agricultural and Forestry Sciences/Key Laboratory of Biology and Genetic Improvement of Cotton in Huanghuaihai Semiarid Area,Ministry of Agriculture,Shijiazhuang 050051,China)
出处
《河南农业科学》
CSCD
北大核心
2018年第11期32-36,共5页
Journal of Henan Agricultural Sciences
基金
国家青年自然基金项目(31701380)
河北省青年自然基金项目(C2015301051)
国家棉花产业技术体系项目(CARS-15-15)
河北省现代农业科技创新工程项目(F18R2018113279)
河北省农林科学院科学技术研究与发展计划项目(2018070101)
关键词
杂交棉
滨海盐碱地
密度
产量
纤维品质
Hybrid cotton
Coastal saline-alkali land
Plant density
Yield
Fiber quality
