Regulators must not be abused

Plant growth regulators are agricultural products rich in high and new technology, which are widely used in household production in recent years. In actual production, if plant growth regulators are used scientifically, they can become a "good medicine" for increasing production and income, and if used blindly, they can cause irreparable economic losses. At present, the plant growth regulators used can be divided into three categories: growth promoters, growth inhibitors and growth retarders, which are harmless to human beings and animals. As a chemical agent which can regulate and stimulate plant growth, because of its different properties and dosage, it can not only be used for plant rooting, sprouting, early ripening, preventing flower and fruit from falling, forming seedless fruit, but also inhibiting germination, pruning and thinning and eliminating grass damage. Therefore, in the use of plant growth regulators must be familiar with the efficacy and scope of use, it is best to use symptomatic under the specific guidance of agricultural scientific and technological personnel, must not be blindly abused, so as not to cause losses. It should also be pointed out that whether the concentration of plant growth regulators is appropriate or not has a significant difference on the growth and development of crops. For example, if the concentration is infinitely high, it is easy to form old seedlings, but if the concentration is too small, it will not play an inhibitory role. In addition, crops absorb nutrients mainly through the stomata of leaves, and the stomata on the back of leaves are more than those on the front, so both sides should be taken into account until they are sprayed, especially functional leaves. Stir evenly before spraying to improve the efficacy. The time for spraying plant growth regulators should be rebellious when there is no wind in sunny days, and the effect is best at 9: 00 a.m. to 11:00 and 4: 00 p.m. to 6 p.m., but not in rainy and windy days and at noon in sunny days.