[1]Cotton Research Institute Xinjiang Academy of Agricultural and Reclamation Science/Northwest Inland Region Key Laboratory of Cotton Biology and Genetic Breeding Ministry of Agriculture and Rural Affairs Shihezi 832000 P.R.China;
[2]Xinjiang Academy of Agricultural and Reclamation Science Shihezi 832000 P.R.China;
machine-harvested cotton; planting patterns; defoliation; yield; quality;