4PETTIGREW W T, Meredith W R. Dry matter production, nutrient uptake, and growth of cotton as affected by potassium fertilization[J]. Plant Nutration, 1997,20:531-548.
5PETTIGREW W T, Heitholt J J, Meredith W R.Genotypic interactions with potassium and nitrogen in cotton of varied maturity[J]. Agronomy Journal,1996,88:89-93.
6PETTIGREW W T. Relationships between insufficient potassium and crop maturity in cotton[J]. Agronomy Journal, 2003,95 : 1323-1329.
7CASSMAN K G, Kerbu T A, Roberts B A, et al.Differential response to two cotton cultivars to fertilizer and soil potassium[J]. Agronomy Journal, 1989,81:870-876.
8MULLINS G L, Burmester C H, Reeves D W. Cotton response to in-row subsoiling and potassium fertilizer placement in Alabama [J]. Soil & Tillage Reserch, 1997,40:145-154.
9CASSMAN K G, Kerbu T A, Roberts B A, et al.Potassium nutrition effects on lint yield and fiber quality of Acala cotton[J]. Crop Science, 1990, 30:672-677.
10PETTIGREW W T. Potassium deficiency increase specific leaf weights and leaf glucose levels in fieldgrown cotton [J]. Agronomy Journal, 1999, 91:962-968.
