"Growth regulator" is usually called "auxin" and plays a role in regulating growth. It can make crops grow better and meet our requirements. For example: greener leaves, bigger and more beautiful fruits, more developed roots, healthier growth, even resistance to low and high temperatures, improving disease resistance, delaying aging, or promoting maturity. In order to realize these expectations, we should choose regulators with corresponding functions.
Of course, when using, we should also consider the influence of crop environmental conditions on drug efficacy. Because most of these regulators are chemically synthesized, a few are naturally extracted, because the process is different and the purity is different. Just like pesticides, two products with the same ingredients have different effects. Because growth regulators are also a kind of pesticides, they need to be absorbed and utilized by plants in various ways. Different product formulations and environmental conditions have different drug effects.
2. Types and simple understanding
Plant growth regulators can be roughly divided into several types: plant growth promoters, plant growth retarders, plant growth inhibitors and preservatives. In terms of classification, it is actually very easy to understand their functions:
When the crops grow slowly and are short, and the leaves are not stretched, we often use brassinolide, gibberellic acid and sodium nitrophenolate; Paclobutrazol and chlormequat are often used to control food crops. There is also thiabendazole for cotton defoliation, which can kill 2,4-D of dicotyledonous plants by increasing the concentration of the drug; α -naphthylacetic acid with flower protection and fruit expansion functions. Ethephon has a good effect on promoting grape coloring, and so on.
Most growth regulators belong to hormones, so the most important thing for hormones is the dosage, which is much more rigorous than pesticides, fungicides and foliar fertilizers. The proportion of dosage in different crops is different (I won't list them one by one here, you can consult manufacturers or technicians according to products, ingredients and regional crops).
3. Understand the relationship between regulators and pesticides.
Regulators have special significance in plant protection. It is not fertilizer, but it can promote fertilizer absorption. It can't kill bacteria, but it can improve the disease resistance of crops. In the environment of "reducing drugs and losing weight", using regulators well can greatly improve your competitiveness in plant protection industry. Let me give you an example:
A: As we all know, the cold spring in northwest China in 20 18 brought great disaster to the apple industry, and the price of apple futures even soared for a time. Then, if regulators such as brassinolide and sodium nitrophenolate can be used for prevention before the "spring cold", although not all of them can be guaranteed to be effective, most areas with mild freezing damage can also reduce great losses.
B, in Northeast China, the regulator can be sprayed in advance 1-2 days before rice transplanting, which can quickly take root and turn green, prevent cold in late spring and improve the utilization rate of nitrogen fertilizer for turning green, thus increasing the effective tiller number and increasing the yield in the later period.
Summary: the effect of the regulatory agencies is not immediate. Unlike pesticides, it can see dead insects immediately. Improving the effect of plant protection is a general experience. How to use it is a test of plant protection skills. Moreover, when spraying regulators, attention should be paid to drug damage and spraying sites. I hope it will be helpful for everyone to raise their awareness of plant protection.
Click: Plant Protection Information to learn more about plant protection information.