Application of Plant Growth Regulators on Cotton（一）

According to the requirements of cotton growth and development and production targets, from the germination of seeds, at different growth stages, through the application of one or more plant growth regulators several times, the purpose and systematic adjustment of the whole growth period of the crops can be achieved. The use of the composite effect between the regulators, coordination of a variety of physiological processes in the body, solving a variety of problems in crop growth and production, to achieve multiple goals of production.

I.  Mepiquat  1

Mepiquat  1, Mepiquat chloride, is a plant growth regulator. Such plant growth regulators include water and powders, and there are as many as 49 species.

It inhibits cell elongation and inhibits the biosynthesis of gibberellin. Promote the absorption of roots, stems and leaves, promote the synthesis of chlorophyll in crops, inhibit the elongation of main stems and fruit branches, make the plant type compact, delay the sealing, prevent prolonged growth, improve the ventilation and light transmission in the field, help to enhance photosynthesis; control crop madness, Reduce the consumption of ineffective nutrients; enhance the root activity of crops, so that the roots are developed, the main roots grow, the lateral roots increase, improve the crop resistance, lodging resistance and drought resistance; reasonably adjust, distribute the contradiction between vegetative growth and reproductive growth, promote reproductive growth To reduce flower and fruit shedding, early maturity, improve fruit quality, increase production and income.

2. Chlormequat

There are 17 kinds of chlormequats and powders registered on cotton in the market.

The mechanism of action of this product is to inhibit the gibberellin biosynthesis of the plant body, and the action site is to inhibit the formation of kauriene, which causes the endogenous gibberellin biosynthesis to be blocked. It is an antagonist of gibberellin. Its physiological function is to control plant growth, lodging resistance, enhance photosynthesis, and improve stress resistance. Its physiological function is to control plant growth, lodging resistance, photosynthesis enhancement, improve stress resistance, improve quality, increase yield, and effectively regulate cotton growth.

3. Sodium nitrophenolate

Plant cell activator can quickly penetrate into plants, promote the flow of protoplasm of cells, accelerate the rooting speed of plants, and promote the development of crop roots, growth, reproduction and results, especially for pollen tubes. The promotion of elongation, the help of fertilization, and the effect of sturdiness are particularly obvious. It can be used to promote cotton growth and development, early flowering, break dormancy, promote germination, prevent falling flowers, improve product quality and so on. Because it is different from plant hormones, it can be used at any time between the start of planting and the harvest.

It can penetrate into plants to promote the flow of protoplasts, accelerate the root-planting speed of plants, and promote the development of plant roots, growth, reproduction and results. The product can be treated by foliar spraying, soaking, seedling infusion and bud spreading.

4. Naphthaleneacetic acid

This product is a plant production regulator for cotton and can be internally absorbed. It has the functions of protecting flowers and fruits, improving fruit setting rate, promoting fruit hypertrophy and precocity, and has certain control effects on cotton madness and yield increase. It is the main ingredient in the market for rooting powder.

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