摘要
以冀863为供试材料,研究了5个不同密度水平(3.0、5.0、7.0、9.0与11.0万株/hm^2)对棉花生长结铃及产量、品质的影响,结果表明:随着种植密度的增大,棉花株高呈先上升然后略降之后再升的趋势,单株果枝台数与总果节数呈降低趋势;单株外围铃、下部铃、上部铃的成铃数呈下降趋势,而单位面积的成铃数则均为先升后降趋势,单位面积的总成铃数以9.0万株/hm^2处理最高,各部位的成铃率则以7.0万株/hm^2处理最高。不同处理之间的单位面积子棉产量、单位面积植株干物重和总生物量差异显著,处理9.0万株/hm^2的单位面积子棉产量最高,7.0万株/hm^2处理次之;不同处理之间的棉花纤维品质上半部平均长度、整齐度指数、断裂比强度、马克隆值和伸长率差异均不显著。冀863适宜的种植密度为7.0~9.0万株/hm^2。
Ji 863 was used as material to study the impact of 5 different densities （3.0, 5.0, 7.0, 9.0 and 11.0× 104 plants/hm2） on growth, bell setting, yield and fiber quality of cotton. Results showed that with the increase of planting density, the plant height increased and then decreased, branch number and fruit number showed a decrease trend; plant peripheral, lower and upper bell numbers were declined, however the bell number per unit area was increased and then decreased; the bell number under treatment 1V per unit area was the highest, fluid rate of treatment III was the highest. The cotton yields were significantly different between different processing, dry matter weight and total biomass per unit area were also significantly different; the cotton yield of treatment IV was the highest, and treatment Ⅲ was the second. The cotton fiber quality as the above half average length, uniformity index, breaking strength, micronaire and elongation were not significantly differrent between different treatments. The suitable planting density of Ji 863 was 7.0-9.0× 104plants/hm2.
出处
《作物杂志》
CAS
北大核心
2017年第4期84-88,共5页
Crops
基金
河北省农林科学院创新工程项目(F17R2017039085)
河北省农林科学院成果转化示范基地建设项目
河北省农业厅科技成果推广项目
关键词
种植密度
结铃性
产量
品质
Planting density
Boll setting
Lint yield
Fiber quality
