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Table 5 Meteorological factors during the cotton growth period at the experimental station in Dafeng, Jiangsu

From: Effects of mepiquat chloride on yield and main properties of cottonseed under different plant densities

Month

Average temperature /oC

Precipitation /mm

Heat units /oC

2013

2014

2013

2014

2013

2014

April

12.3

14.1

21.2

51.1

−76

−18

May

18.9

20.2

96.0

79.1

137

173

June

22.2

22.4

77.3

127.9

226

236

July

29.8

25.9

207.5

113.8

474

353

August

29.5

25.0

68.6

130.4

462

326

September

22.6

22.6

57.8

195.8

237

237

October

17.3

17.5

45.2

17.0

69

86

Average/total

21.8

21.1

573.6

715.1

218

199

  1. Heat units were calculated from maximum and minimum temperatures as∑[(max. Temp. + min. Temp.)/2–15 °C]. All data were collected from a weather station (Campbell AG800, Genetics, USA) located near the experiment field