Key points for the use of plant growth regulators mainly include the following aspects:
Choose the appropriate growth regulator: Each plant growth regulator has its inherent characteristics and functions. Before use, you need to fully understand its functions and choose the appropriate regulator according to the purpose of use. For example, ethephon can promote the maturity of cotton bolls, and chlormequat and paclobutrazol have the effects of controlling plant type, inhibiting leggy growth, and preventing lodging.
Master the appropriate application method and period: Choose the appropriate application method according to the dosage form and purpose of use of the growth regulator. Common application methods include spraying, dipping, dipping, smearing and soil irrigation. The application period and meteorological factors are also very important. For example, the spraying method should be carried out during a cool, windless and high atmospheric humidity period.
Correctly master the concentration and dosage of the agent: The use concentration range of growth regulators is extremely large. The correct method is to determine the dosage first and then the concentration. Too high a concentration is prone to drug damage, and too low a concentration is ineffective.
Test first, then promote: To be on the safe side, a small-scale test should be conducted first, followed by a pilot test, and finally a large-scale promotion.
Combined use with other regulators: The combination of sodium nitrophenolate and sodium naphthaleneacetate can enhance the rooting effect of sodium naphthaleneacetate, while enhancing the rapid rooting effect of sodium nitrophenolate, and the two jointly promote the rooting effect. The combination of DA-6 and ethephon can reduce plant height, and has obvious effects of increasing efficiency and preventing premature aging.
