8Pettigrew WT.Potassium deficiency increase specific leaf weights and leaf glucose levels in field-grown cotton[J].Agron.J.1999,91:962-968.
9Harden G.Premature senescence,potassium end cotton growth[C] //.In Proceedings of the Seventh Australian Cotton Conference,1994:309-314,Broadbeach,Qld.
10Wright PR.Premature senescence on high potassium soils[C] //.In"Proceedings of the Seventh Australian Cotton Conference ",1994:315-321.Broabeach,Qld.
