Plant growth regulators should "prescribe the right medicine"

Plant growth regulators have obvious results in regulating the normal growth of crops, the rational distribution of coordinated nutrients, and the promotion of crop yield increase. Many farmers have been able to apply this new technology with ease. However, some farmers have made mistakes in the process of purchasing and using plant growth regulators, which have negative effects. Some use promoted plant growth regulators on prosperous crops to make the crop grow longer; some use delayed plant growth regulators on normally grown crops, inhibiting crop growth; The use of certain plant growth regulators is not very responsive to the development of their crops; some arbitrarily increase the concentration of delayed plant growth regulators, resulting in the concentration of plant stems and leaves, long time Stiffness does not occur; some early ripeners are used to ripen crops that have not been fully matured, which reduces both yield and quality. In order to prevent plant growth regulators from making mistakes in their use, according to many years of experience and lessons learned, the following points should be noted in the purchase and application technology: 1. Different plants are selected for 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 produced, the flowering period is sensitive to the "920". Soaking in cotton, watering or spraying at the seedling stage is sensitive to “802”, and the flowering stage is prolonged and sensitive to dildoamine, modacrylic, and auxin. Wheat is sensitive to chlorosequestrients at seedling stage. Maize is sensitive to DF-1. Peanuts are relatively long-standing, paclobutrazol sensitive. Soybean and tomato are sensitive to 2,4-D and tomato. Fruit trees are sensitive to "920" and paclobutrazol. Indiscriminate abuse of plant growth regulators should not be allowed in Datian production. Second, according to the growing trend of crops, plant growth regulators are used. For example, when the hybrid rice seedlings encounter a poor flowering period, the “90%” adjustment can be applied to make the flowering period close to an agreement, so as to increase the spike rate. If rice or peanuts are prosperous at seedling stage, application of paclobutrazol promotes strong growth. Such as cotton buds, flowers and bolls appear crazy, can be used a small number of times, before light and heavy after the method of spraying the spinosad, booster prime. Such as promoting cotton early boils, early rod, must be fully mature after autumn peach, spraying ethephon ripening agent in the range above 20 °C. Such as anti-soybeans, tomato drop and fruit drop, available 2,4-D, tomato spirits and other regulators sprayed. Preventing the lodging of wheat can be sprayed with chlormequat and auxin before jointing. Prevents lodging of corn with DF-1. Third, the correct identification and differentiation of plant growth regulators. Be sure to read the product specifications, standard numbers, production licenses, product registration certificates, expiration dates, and plant names on the labels of the selected regulators. Secondly, look at the supervisory agencies that have authority. Third, look at the effective doses. , weight and application methods; four to check with the authentic counterfeit; five to distinguish the difference between the regulator and fertilizer. Some active fertilizers such as Huimanfeng, Zhuangfu Xing, Gaomeishi, etc., also have the effect of promoting the early birth of crops, but it is mainly supplemented with nutrients and cannot replace plant growth regulators.

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Germany imported beads

Imported French lens

mould Die-casting  Eight edge type Revolving arm

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