Effects of planting density and nitrogen application on yield and related characters of direct-seeded cotton variety Gangmian 11

doi:10.14088/j.cnki.issn0439-8114.2020.23.011

Abstract

Abstract: In order to provide theoretical support for the popularization and application of direct-seeded cotton Gangmian 11,three densities and five nitrogen fertilizer treatments were used to study the effects of density and nitrogen application on the yield and related characters in eastern Hubei province.The results showed that in a certain range,with the increasing of nitrogen application,the yield of Gangmian 11 increased.When the nitrogen application was higher than 112.5 kg/hm²,the yield was lower than that under this nitrogen application level.when the high density treatment was 82 500 plants/hm²,the yield was the highest,and there was no significant difference between the high density treatment and the medium density treatment of 71 250 plants/hm².To sum up,in eastern Hubei province,to obtain high yield,the density was controlled at 72 000 plants/hm² to 82 000 plants/hm² and the nitrogen application could be reduced to 112.5 kg/hm².

Key words: cotto, Gangmian 11, direct-seeded, planting density, nitrogen application, yield

CLC Number:

S562

ZHAO Shu-qi, YAN Zhen-hua, ZHANG Hua-chong, LI Wei, HUANG Xiao-li, DAI Bao-sheng. Effects of planting density and nitrogen application on yield and related characters of direct-seeded cotton variety Gangmian 11[J]. HUBEI AGRICULTURAL SCIENCES, 2020, 59(23): 48-50.

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