Effect of Spraying Different Foliar Fertilizers on Cotton Plant Growth and Nutrient Absorption at Early Stage
LIU Aizhong
LI Pengcheng
LIU Jingran
DONG Helin
SUN Miao
WANG Xiaoru
Abstract：The cotton plant growth and nutrient absorption after spraying different concentrations of urea, ammonium nitrate or potassium dihydrogen phosphate at early stage were studied,to explore the rational application method of foliar fertilizers at early stage of cotton. The results indicated that the cotton plant growth rate,biomass and leaf area were significantly higher in the spraying foliar fertilizer treatments than the control treatment(spraying water). In seedling stage,compared with the spraying ammonium nitrate treatment,the growth status of the cotton plant was better in spraying 10 g/L urea treatment, but there were no significant differences in budding stage between these two treatments. The correlation function indicated that the optimal spraying concentration of urea was 11. 1 g/L at seeding stage,and 49. 1 g/L at budding stage. In addition,there was better effect with the combining application of 10 g/L urea and 5 g/L potassium dihydrogen phosphate on the cotton plant. In conclusion,it could provide adequate nutrients, increase leaf area and light utility efficiency by combining application of 10 g/L urea and 5 g/L potassium dihydrogen phosphate on the cotton plant at early stage.
Keywords：foliar fertilizercottonearly stagegrowth and developmentnutrient absorption
Publication Date：2016-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：7( 29-35 )