Plant growth regulators have obvious effects on regulating the normal growth of crops, rationally distributing nutrients, and increasing crop yield and income. Many farmers have been able to apply this new technology handily.
However, some farmers have made some mistakes in the process of purchasing and using plant growth regulators, which have negative effects. Some use promoted plant growth regulators on prolonged crops to make crops longer and more prosperous; some use delayed plant growth regulators on normally growing crops, inhibiting crop growth; There is no response to the use of certain plant growth regulators for periods that are not very sensitive to their crop development; some increase the concentration of delayed plant growth regulators at will, resulting in concentration of stems and leaves of crops for a long time. It is not stiff; some apply early ripeners to ripen the fruit of the crop that is not fully mature, reducing yield and reducing quality.
In order to prevent the mistakes in the use of plant growth regulators, according to many years of experience and lessons, in the purchase and application techniques, the following points should be noted:
First, different plant selection of plant growth regulators.
The sensitivity of different crops to plant growth regulators is different. For example, rice seedlings are sensitive to paclobutrazol. When hybrid rice is planted, the flowering period is sensitive to "Ninety-two". Cotton soaking, seedling watering or spraying is sensitive to "802", and the bud flowering period is long and sensitive to ketamine, regulating ampere, and promoting auxin. Wheat is sensitive to spurs in the seedling stage. Corn is sensitive to DF-1. Peanuts are long-lasting and paclobutrazol is sensitive. Soybeans and tomatoes are sensitive to 2,4-D and tomato spirit. The fruit tree is sensitive to "Ninety-two" and paclobutrazol. Do not abuse the plant growth regulators in the production of Daejeon.
Second, according to the growth of crops, the choice of plant growth regulators. For example, when the hybrid rice seedlings encounter a flowering period, the "Nine-two" adjustment can be applied to make the flowering period close to the anastomosis, so as to increase the ear-forming rate. If the seedling stage of rice or peanut is prosperous, the use of paclobutrazol will promote the growth of its seedlings. For example, when the cotton bud period and the flowering and boll period appear mad, a small amount of multiple, front light and heavy methods can be used to spray the ketamine and the auxin. For example, if the cotton is vomited early and the rod is pulled early, it is necessary to spray the ethephon ripening agent in the range of 20 ° C or more after the autumn peach is fully matured. Such as anti-soybean, tomato falling flowers and fruit, can be sprayed with 2,4-D, tomato spirit and other regulating agents. Preventing wheat from lodging can be sprayed with chlormequat and auxin before the jointing. Prevent deflation of corn using DF-1.
Third, the correct identification of plant growth regulators. Must be on the selected regulators, see the product specifications, standard number, production license, product registration certificate, expiration date, factory name on the label; second, the supervisory unit is authoritative; three must see the effective dose , weight and application method; four to check with the genuine to see if it is counterfeit; five to distinguish between the difference between the regulator and the micro-fertilizer. Some active fertilizers such as Huimanfeng, Zhuangfuxing, Gaomeishi, etc. also promote the early growth and early development of crops, but it is mainly supplemented with nutrient elements and cannot replace plant growth regulators.
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