Five points for attention in the use of regulators in cotton fields

First, pay attention to the scope of application. The cotton field which is suitable for the use of plant growth regulators must have good water and fertilizer conditions, and the cotton has a prosperous growth trend or has already grown. It can not be used in cotton fields where the climate is dry, cannot be watered, the growth is weak or the growth is inhibited by diseases and insect pests. Second, pay attention to the period of application. Thalidomide is generally used from full bud to early flowering, and dwarf is applied at flowering stage, from late June to early July. Third, pay attention to the dosage. If the dosage is too large, she cotton plant will inhibit overweight and self-shade closure, especially excessive dwarf, which will make the boll small deformation, boll shell thickening, late ripening and yield reduction; the dosage is too small, can not inhibit the use. Dosage per mu: 2 grams of thalidomide, 30 kilograms of water; 30 kilograms of 30ppm solution, sprayed evenly on the top of cotton plants and fruit branch tips. Fourth, pay attention to strengthening management. After using growth regulators in cotton fields, we must strengthen management, pay attention to watering and fertilization, and achieve lower promotion and upper control. Prevent cotton leaf color dark green after use without topdressing, not watering, loosening management, resulting in premature senescence and yield reduction. Be careful not to misuse it. To prevent the loss of labels, the use of dwarf as pesticides, resulting in losses, or pesticides as growth regulators, will not work.