Influence of Planting Density on Development,Yield and Quality of Upland Cotton
The purpose of this study was to provide theoretical basis for population control technique and find -ing the suitable planting density of variety comparison in this area .With Hengmian 4 ,Jimian 958 and Kuaiyu 66 as tested materials , we designed a density experiment in order to study the influence of planting density on plant height,fruit branch,leaf area index,yield and quality characters of upland cotton in mid-south region of Hebei in 2012 and 2013 .The results were as follows:Plant height and leaf area index increased as population density in-creased .Number of fruit branch decreased .Yield components single boll weight and lint percentage decreased as population density increased .Bud number , flower number and boll number per plant in different period also de-creased with population density .Production improved as population density increased .52 500 plants/ha to 67 500 plants/ha density was the suitable planting density range in mid-south region of Hebei and can be used as reference density of population control and variety comparison experiment .Density had certain influence on fiber quality .50%staple length increased and micronaire value decreased as population density increased .
国家科技期刊平台
NSTL
万方数据
