Influence of Planting Density on Development, Yield and Quality of Upland Cotton

doi:10.7668/hbnxb.2014.S1.030

Abstract

Abstract: The purpose of this study was to provide theoretical basis for population control technique and finding 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 increased.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 decreased 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.

Key words: Upland cotton, Planting density, Development, Yield, Fiber quality

CLC Number:

S562.01

DAI Mao-hua, WU Zhen-liang, LIU Li-ying, MA Jun-yong. Influence of Planting Density on Development, Yield and Quality of Upland Cotton[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2014, 29(S1): 146-154. doi: 10.7668/hbnxb.2014.S1.030.

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