摘要
以冀棉958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)对棉花生长发育及产量、品质的影响,结果表明:随着种植密度的增大,棉花株高呈增加趋势,果枝台数与果节数呈降低趋势;单株内围铃、外围铃、下部铃、中部铃、上部铃的成铃数呈下降趋势,而单位面积的成铃数,内围铃呈递增趋势,外围铃、下部铃、中部铃与上部铃则先增后减。不同处理之间的子棉产量差异达极显著,单位面积干物重与总生物量差异不显著;不同处理之间的棉花纤维品质只有马克隆值差异显著,其他指标如上半部平均长度、整齐度指数、断裂比强度和伸长率差异均不显著。适宜的种植密度为7.0万株/hm^2。
Jimian 958 was used as material to study the impact of 5 different density levels （3.0, 5.0, 7.0, 9. 0, and 11.0 ＊ 10^4plants/hm^2） on growth, yield and fiber quality of cottons. Results showed that with the increase of planting density, the plant height increased, branch number and the fruit number showed a trend of de- crease ; bell numbers inside plants, outside plants, at lower, central and upper parts of the plants declined ; but the total bell numbers and that inside plants per unit area showed a trend of increase ; bell numbers inside plants outside plants, at lower, central and upper parts of the plants were increased firstly and then decreased. The cotton yields were extremely significant difference between different processing, dry matter weight and total biomass per unit area difference was not significant. For the cotton fiber quality, only the Micronaire showed significant different; other indicators such as the above half average length, uniformity index, breaking strength and elongation were not significant different among different treatments. The suitable planting density was 7.0×10^4plants/ hm^2 .
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2018年第4期95-99,共5页
Journal of Arid Land Resources and Environment
基金
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资助
关键词
种植密度
结铃性
产量
品质
planting density
boll setting
lint yield
fiber quality
