... . Medium fertility plots, basal urea 20kg, P 30 ~ 40kg, potassium chloride 7.5kg / mu, with water after transplanting urea Mushi ... 10kg, Lei fertilizer in June 15 ~ 20, applied potassium chloride 15kg / mus, fertilizer boll of cotton in mid-July ... flowering stage hold on long, setting up the yield shelves; Potassium fertilizer flowering more than enough bolls, late Paul stability against ...