Plant growth regulators are widely used in agriculture. It can regulate the growth and development of plants and improve the growth of crops. Different plant growth regulators have different effects.
First: promote seed germination
Some factors may cause low germination rate or germination failure of seeds, such as long storage time, poor storage environment, immature seeds, etc. The use of gibberellin can promote seed germination and increase seed germination rate. Different plant growth regulators have different effects on different seeds.
Second: Promote the development of plant roots and plant short and strong seedlings
Growth inhibitors belong to one type of plant growth regulators. It can overcome the influence of environmental conditions, delay the growth of seedlings and promote the development of the root system of the plant, to plant dwarf seedlings. Paclobutrazol and paraquat have a good effect on the cultivation of dwarf seedlings. Their main application methods are spraying on the leaves and seed treatment during the seedling stage.
Third: Promote the filling of plants
The use of plant growth regulators such as auxin, gibberellin and cytokinin during the booting and flowering stages of grains can increase yield and grain filling.
Fourth: Enhance the lodging resistance of plants
High-stemmed crops may fall in later stages. The use of plant growth regulators such as paclobutrazol, uniconazole, and calcium regulator can increase the stem thickness of plants, control plant height, and prevent plant lodging.
Fifth: Prevent plants from falling flowers and fruits to promote fruit setting
The flowers and fruits of cotton, beans and melons have a great relationship with the nutrient hormones in the body. Use auxins and growth inhibitors to improve its growth status and balance hormones, thereby preventing flower and fruit falling, and increasing fruit setting rate.
Sixth: accelerate plant maturity
Ethephon can promote fruit ripening. Different plants need different plant growth regulators to promote fruit ripening.
But it should be noted that:
First: Do not increase the dosage at will. Otherwise, its growth may be inhibited, and in severe cases, the leaves may become deformed, dry and fall off, and the entire plant may die.
Second: Can not mix at will. After carefully reading the instructions for use and testing, we can determine whether they can be mixed.
Third: Use the method properly. Follow the instructions to dissolve the medicine.