Influences of Planting Density and Row Spacing on Boll Setting and Cotton Yield Traits of “Ⅰ” Plant Type Cotton Directly Sown after Wheat（rape） Harvest

doi:10.14088/j.cnki.issn0439-8114.2018.15.006

Abstract

Abstract: “Ⅰ”plant type cotton was a promising alternative for mechanical farming attribute to their key features,such as early maturity and also intensive boll setting. “Ⅰ”plant type variety ZS07 was used as test material to analyze the seed cotton yield and boll setting traits of the cotton directly sown after wheat（rape） harvest in the middle reaches of the Changjiang River with five planting density（6.0×10⁴,7.5×10⁴,9.0×10⁴,10.5×10⁴,12.0×10⁴ plant/hm²） under wide row（0.76 m）,wide-narrow row（0.66+0.10 m）,narrow row（0.50 m） and with another five plant density（12.0×10⁴,15.0×10⁴,18×10⁴,21.0×10⁴,24.0×10⁴ plant/hm²） under ultra-narrow row（0.38 m）. The results showed that,the planting density had obvious influence on seed cotton yield and population boll number under narrow row. Seed cotton yield and population boll number indicated an increase trend along with the enlarging density under wide-narrow and narrow row. The seed cotton yield under wide row, ultra-narrow row was first increased then decreased. The seed cotton yield under wide row was obviously lower than that under the other three row spacing. Therefore, narrowing row spacing at a high planting density in practice might be a reasonable planting pattern to increase the production and efficiency of “Ⅰ”plant type cotton.

Key words: “Ⅰ”plant type cotton;, directly sown after wheat（rape） harvest, density, row spacing

CLC Number:

S562

FENG Chang-hui, ZHANG You-chang, CHEN Zai-xing, XI Gui-mei, YI Xian-da, ZHANG Cheng, QIN Hong-de. Influences of Planting Density and Row Spacing on Boll Setting and Cotton Yield Traits of “Ⅰ” Plant Type Cotton Directly Sown after Wheat（rape） Harvest[J]. HUBEI AGRICULTURAL SCIENCES, 2018, 57(15): 28-31.

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