Foliar composite fertilizer for promoting cotton growth and development, and applications thereof

The invention relates to a foliar composite fertilizer for promoting cotton growth and development, and applications thereof. The foliar composite fertilizer is prepared from the following raw materials by weight: 200-400 parts of potassium dihydrogen phosphate, 100-200 parts of urea, 20-40 parts of ferrous sulfate, and 10-30 parts of zinc sulfate. According to the present invention, the foliar composite fertilizer has advantages of effective improvement of the nutrition growth of the cotton, promotion of the growth and development of the cotton, increase of the cotton yield, and provision of the good yield-increasing effect; and the experiment results prove that the cotton flower number, the branch number, the cotton boll and the cotton yield are significantly improved after the foliar composite fertilizer is sprayed. 种促进棉花生长发育的叶面复合肥料及其应用，所述叶面复合肥料由以下重量份数的原料制成，磷酸二氢钾200～400份，尿素100～200份，硫酸亚铁20～40份和硫酸锌10～30份。本发明之叶面复合肥料能有效地改善棉花的营养生长，促进棉花生长发育，提高棉花的产量，具有较好的增产效果。实验证明，喷施叶面本发明叶面复合肥料产品后，棉花花数，果枝台数，花铃，棉花产量均显著提高。